Hey tutors, kindly help me with this physics exercise prep for an exam. Explanation need not be too detailed

1. [-/2 Points] DETAILS SERCP11 2.QQ.001. MY NOTES ASK YOUR TEACHER The figure below shows the unusual path of a confused football player. After receiving a kickoff at his own goal, he runs downfield to within inches of a touchdown, then reverses direction and races back until he's tackled at the exact location where he first caught the ball. FOOTBALL FOOTB 410 -20 -30 -40 50 4 0+ 3|0+ 2 0- 10 0 yd 50 vd 100 yd A During this run, what is each of the following? (a) the total distance he travels yd (b) his displacement yd (c) his average velocity in the x direction yd/s2. [-/2 Points] DETAILS SERCP11 2.QQ.002. MY NOTES ASK YOUR TEACHER True or False? (a) A car must always have an acceleration in the same direction as its velocity. ---Select--- V (b) It's possible for a slowing car to have a positive acceleration. ---Select--- V (c) An object with constant nonzero acceleration can never stop and remain at rest. ---Select--- V3- [-!2 Points] DETAILS SERCP11 2.120.003. MY NOTES ASK YOUR TEACHER Parts (a)r (b). and (c) of the figure below represent three graphs of the velocities of different objects moving in straight-line paths as functions of time. The possible accelerations of each object as functions of time are shown in parts (cl), (e), and (f). Match each velocity vs. time graph with the acceleration vs. time graph that best describes the motion. 1' f N' I | I gt \"s f m .3 :- ih} . I i: 1'1 l. Z, [all Z. [In f (a) ---Select--- V {b} :---Select--- v: (c) ---5elect--- V 4. [-/2 Points] DETAILS SERCP11 2.QQ.004. MY NOTES ASK YOUR TEACHER The three graphs in the figure below represent the position vs. time for objects moving along the x axis. Which, if any, of these graphs is not physically possible? O graph a O graph b O none of these O graph c (a) (b) (c) A5. [-/2 Points] DETAILS SERCP11 2.QQ.005. MY NOTES ASK YOUR TEACHER Figure (a) is a diagram of a multiflash image of an air puck moving to the right on a horizontal surface. The images sketched are separated by equal time intervals, and the first and last images show the puck at rest. (a) .. . (b) (c) (d) (a) In Figure (b), which color graph best shows the puck's position as a function of time? ---Select--- V (b) In Figure (c), which color graph best shows the puck's velocity as a function of time? ---Select--- V (c) In Figure (d), which color graph best shows the puck's acceleration as a function of time? ---Select--- V6. [-/2 Points] DETAILS SERCP11 2.QQ.006. MY NOTES ASK YOUR TEACHER A tennis player on serve tosses a ball straight up. While the ball is in free fall, its acceleration does which of the following? O increases O decreases O increases then decreases O decreases then increases O remains constant Need Help? Read It 7. [-/2 Points] DETAILS SERCP11 2.QQ.007. MY NOTES ASK YOUR TEACHER A tennis player on serve tosses a ball straight up. As the tennis ball travels through the air, its speed does which of the following? O increases O decreases O increases and then decreases remains the same decreases and then increases Need Help? Read It 8. [-/2 Points] DETAILS SERCP11 2.QQ.008. MY NOTES ASK YOUR TEACHER A skydiver jumps out of a hovering helicopter. A few seconds later, another skydiver jumps out, so they both fall along the same vertical line relative to the helicopter. Assume both skydivers fall with the same acceleration. How does the vertical distance between them change? O increases O decreases O stays the same How does the difference in their velocities change? O increases O decreases O stays the same Need Help? Read It9. [-/2 Points] DETAILS SERCP11 3.QQ.001. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The magnitudes of two vectors A and B are 15 units and 6 units, respectively. What are the largest and smallest possible values for the magnitude of the resultant vector R = A + B? largest units smallest units Need Help? Read it 10. [-/2 Points] DETAILS SERCP11 3.QQ.002. MY NOTES ASK YOUR TEACHER The figure below shows two vectors lying in the xy plane. Determine the signs of the x and y components of A. B, and A + B, and place your answers in the following table. Vector x component y component A ---Select--- ---Select--- ---Select--- ---Select--- A + B ---Select--- V ---Select--- A* Need Help? Read It11. [-/2 Points] DETAILS SERCP11 3.QQ.003. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A girl on a bicycle takes 16.4 s to ride half way around a circular track of radius 16.5 m (see the figure below). R At 1= 0 HINT (a) What is the girl's average speed (in m/s)? m/s (b) What is the magnitude of her average velocity (in m/s)? m/s Need Help? Read It 12. [-/2 Points] DETAILS SERCP11 3.QQ.005. MY NOTES ASK YOUR TEACHER Consider the following controls in an automobile: gas pedal, brake, steering wheel. Which controls in this list cause an acceleration of the car? (Select all that apply.) O brake O gas pedal Onone of these O steering wheel13. [-/2 Points] DETAILS SERCP11 3.QQ.006. MY NOTES ASK YOUR TEACHER Suppose you are carrying a ball and running at a constant speed, and wish to throw the ball and catch it as it comes back down. Neglecting air resistance, you should do which of the following? O Throw the ball straight up in the air and slow down to catch it. O Throw the ball at an angle of about 45 with the horizontal and maintain the same speed. O Throw the ball straight up in the air and maintain the same speed. Need Help? Read It 14. [-/2 Points] DETAILS SERCP11 3.QQ.007. MY NOTES ASK YOUR TEACHER As a projectile moves in its parabolic path, the velocity and acceleration vectors are perpendicular to each other at which of the following along the projectile's path? O nowhere O at the peak O everywhere O not enough information Need Help? Read It 15. [-/2 Points] DETAILS SERCP11 4.QQ.001. MY NOTES ASK YOUR TEACHER Which of the following statements are true? (a) An object can move even when no force acts on it. ---Select--- V (b) If an object isn't moving, no external forces act on it. ---Select--- V (c) If a single force acts on an object, the object accelerates. ---Select--- V (d) If an object accelerates, a force is acting on it. ---Select--- V (e) If an object isn't accelerating, no external force is acting on it. ---Select--- V (f) If the net force acting on an object is in the positive x-direction, the object moves only in the positive x-direction. ---Select--- V Need Help? Read It15- [3'2 Points] DETAI L5 SERC P11 4.QQ.DDZ. MY NOTES ASK YOU R TEACH ER which has greater value, a newton of gold on Earth or a newton of gold on the Moon? CI The newton of gold on the Moon. CI The value is the same, regardless. C' The newton of gold on the Earth. Need Help? _ Consider the two situations shown in the figure below, in which there is no acceleration. In both cases, the men pull with a force of magnitude F. Is the reading on the scale in figure (i) greater than, less than, or equal to the reading in figure {ii}? O greater than C) equal to 0 less than 15- [-!2 Points] DETAI L5 SERCP11 4.QQ.006. MY NOTES ASK YOU R TEACH ER For the child being pulled forward on the toboggan in the figure below, which of the following is true of the magnitude of the normal force exerted by the ground on the toboggan? O equal to the total weight 0 greater than the total weight O possiblyl greater or less than the total weight. depending on the size of the weight relative to the tension in the rope Q less than the total weight i E} T3" Need Help? 19- [-!2 Points] DETAILS SERCP11 4.QQ.I]ID?. MY NOTES ASK YOU R TEACH ER If you press a book at against a vertical wall with your hand, in what direction is the friction force exerted by the wall on the book? 0 upward O downward Cl out from the wall 0 into the wall Need Help? 20- [-!2 Points] DETAILS SERCP'H 4.QQ.BUB. MY NOTES ASK YOUR TEACHER A crate is sitting in the center of a flatbed truck. As the truck accelerates to the east, the crate moves with itr not sliding on the bed of the truck. In what direction is the friction force exerted by the bed of the truck on the crate? O there is no friction force, because the crate isn't sliding O to the east O to the west . Need Help? 21. [-/2 Points] DETAILS SERCP11 4.QQ.009. MY NOTES ASK YOUR TEACHER Suppose you're playing with your niece in the snow. She's sitting on a sled and asks you to move her across a flat, horizontal field. You have a choice of the following. Which option would be easier? O attaching a rope to the front of the sled and pulling with a force at 30 above the horizontal (Fig. b) O pushing her from behind by applying a force downward on her shoulders at 30 below the horizontal (Fig. a) Why? This answer has not been graded yet. F (a) (b) A Need Help? Read It 22. [-/2 Points] DETAILS SERCP11 4.2.OP.003. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 9.0 kg body undergoes an acceleration of 3.9 m/s. (a) What is the magnitude of the resultant force acting on it (in N)? (b) If this same force is applied to a 5.4 kg body, what is the magnitude of the acceleration (in m/s2)? m/s Need Help? Read It23- [-J'Z Points] DETAILS SERIEP11 4.2.DP.006. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A train locomotive pulls a train with a mass of 1.30 x 10? kg on level rails. The locomotive exerts a constant force of 130 x 105 N on the train. How much time does it take to increase the speed of the train from rest to 64.0 kmfh? {Ignore any resistance force from the rails on the wheels of the train. Enter your answer in minutes.) Need Help? _' 24. [-/2 Points] DETAILS SERCP11 4.2.P.004. MY NOTES ASK YOUR TEACHER One or more external forces are exerted on each object enclosed in a dashed box shown in the figures below. Identify the reaction to each of these forces. (Assume that (a), (b) and (c) occur on Earth while (d), (e) and (f) occur far from any outside gravitational influences. Select all that apply.) Contact forces b Field forces + Q Iron N S A (a) the spring exerts a force O to the right on the wall O to the right on the hand to the left on the hand O upward on the Earth downward on the Earth O to the left on the wall (b) the wagon exerts a force O downward on the Earth due to gravitational attraction upward on the Earth due to gravitational attraction downward on the Earth due to contact downward to the left on the handle O upward on the Earth due to contact O upward to the left on the handle (c) the ball exerts a force O downward on the Earth O upward on the Earth O downward to the left on the player O downward to the right on the player O upward to the right on the player (d) m exerts a forceE] upward on M E] downward on M D to the right on M [I to the left on M (e) -q exerts a force F] to the right on Q C] to the left on Q C] downward on Q [I upward on Q (f) the iron exerts a force [I to the right on the magnet C] to the left on the magnet E] downward on the magnet E] upward on the magnet Need Help? 25. [4'2 Points] SERCP11 4.2.PJU5. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A bag of sugar weighs 350 lb on Earth. What would it weigh in newtons on the Moon, where the free-fall acceleration is one- sixth that on Earth? 2 N Repeat for Mercury, where g is 0.35? ijmes that on Earth. E\" Find the mass of the bag of sugar in kilograms at each of the three locations. Mercury |:|kg . Need Help