15. [-/5.2 Points] DETAILS SERCP11 4.2.P.012. MY NOTES ASK YOUR TEACHER Two forces are applied to a car in an effort to move it, as shown in the figure below. (Let Fj = 405 N and F2 = 375 N. Assume up and to the right are in the positive directions.) 100 80 F F2 (a) What is the resultant vector of these two forces? magnitude N direction to the right of the forward direction (b) If the car has a mass of 3,000 kg, what acceleration does it have? Ignore friction. m / s 23:52 PM Sun Nov 13 . . . 1 100% webassign.net time left... 4. [-/5.2 Points] DETAILS SERCP11 1.9.P.058. MY NOTES 1s: 39 38HER A force F, of magnitude 5.90 units acts on an object at the origin in a direction 0 = 55.0 above the positive x-axis. (See the figure below.) A second force F, of magnitude 5.00 units acts on the object in the direction of the positive y-axis. Find graphically the magnitude and direction of the resultant force F 1 + F2. magnitude units direction . counterclockwise from the +x-axis 5. [-/5.2 Points] DETAILS SERCP11 1.10.P.063. MY NOTES ASK YOUR TEACHER The magnitude of vector A is 31.5 units and points in the direction 310 counterclockwise from the positive x-axis. Calculate the x- and y-components of this vector. units AV = units 6. [-/5.2 Points] DETAILS SERCP11 2.1.P.007. MY NOTES ASK YOUR TEACHER A motorist drives north for 33.0 minutes at 92.0 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km in 1.70 h. (a) What is his total displacement? km (b) What is his average velocity? km/h3152 PM Sun Nov 13 'V ?100%- L webassignhei Assignment Scoring time left... Your best submission for each question part is used for your score. 1 . 39 . 47 u 1. [/5.2 Points] DETAILS SERCP11 1.5.P.017. MY NOTES ASK YOUR TEACHER The Roman cubitus is an ancient unit of measure equivalent to about 0.445 m. Convert the 2.04-m height of a basketball forward to cubiti. 2. [/5.2 Points] DETAILS SERCP11 1.5.P.024. MY NOTES ASK YOUR TEACHER A certain car has a fuel efficiency of 34.1 miles per gallon (mi/gal). Express this efficiency in kilometers per liter (km/L). 3. [l5.2 Points] DETAILS SERCP11 1.8.P.046. MY NOTES ASK YOUR TEACHER A ladder 6.10 m long leans against the side of a building. If the ladder is inclined at an angle of 670 to the horizontal, what is the horizontal distance from the bottom of the ladder to the building? {:]m 4. [l5.2 Points] DETAILS SERCP11 1.9.P.058. MY NOTES ASK YOUR TEACHER A force E1 of magnitude 5.90 units acts on an object at the origin in a direction 6 = 55.00 above the positive Xaxis. (See the figure below.) A second force F; of magnitude 5.00 units acts . . on the object in the direction of the positive y-axis. Find graphically the magnitude and direction of the resultant force F1 + F2. magnitude units direction :J counterclockwise from the +X-axis 3:52 PM Sun Nov 13 H 4 ?100%- u webassignnel DETAILS SERCP11 3.A.P.044. W time left... A 2.00-m-tall basketball player is standing on the floor 100 m from the basket, as in the figure below. If he shoots the ball at a 40.0 angle with the h- 1 : 39 : 15 he throw the basketball so that it goes through the hoop without striking the backboard? The height of the basket is 3.05 m. it i L 10.0 m 12. [-l5.2 Points] / \\ 5:01\" 3.05 m 13. [-l5.2 Points] SERCP11 3.QQ.005. 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.) C] gas pedal O none of these C] steering wheel 0 brake 14. [l5.2 Points] SERCP11 4.2.P.006. ASK YOUR TEACHER A train locomotive pulls a train with a mass of 1.00 x 107 kg on level rails. The locomotive exerts a constant force of 6.90 x 105 N on the train. How much time does it take to increase the speed of the train from rest to 66.0 km/h? (Ignore any resistance force from the rails on the wheels of the train. Enter your answer in minutes.) 3:52 PM Sun Nov 13 l webassignnel time left... SERCP112.1.P.020. 1 I 39 I 30 A particle starts from rest and accelerates as shown in the figure below. 7. [-I5.2 Points] (Mm/52) '2 1 0 1(5) l 5 10 15 20 '2 3 (a) Determine the particle's speed at t = 10.0 s and at t = 20.0 s. t: 10.0 s [:] m/s [:1 t = 20.0 5 m/s (b) Determine the distance traveled in the first 200 5. (Enter your answer to one decimal place.) :Jm SERCP11 2.3.P.032. ASK YOUR TEACHER 8. [l5.2 Points] An object moves with constant acceleration 3.95 m/s2 and over a time interval reaches a final velocity of 11.4 m/s. (a) If its original velocity is 5.70 m/s, what is its displacement during the time interval? m H (b) What is the distance it travels during this interval? m U (c) If its initial velocity is 5.70 m/s, what is its displacement during this interval? m D (d) What is the total distance it travels during the interval in part (c)? m U 3152 PM Sun NOV13 ?100% - D webassignnel time left... 9. [l5.2 Points] SERCP112.4.P.045. 1 :39 :22 A ball is thrown vertically upward with a speed of 21.0 m/s. (a) How high does it rise? ITI D (b) How long does it take to reach its highest point? 5 U (c) How long does the ball take to hit the ground after it reaches its highest point? 5 H (d) What is its velocity when it returns to the level from which it started? m/s U 10. [-/5.2 Points] SERCP113.2.P.016. ASK YOURTEACHER An artillery shell is fired with an initial velocity of 300 m/s at 635 above the horizontal. To clear an avalanche, it explodes on a mountainside 39.5 s after firing. What are the x- and y- coordinates of the shell where it explodes, relative to its firing point? :1 m y: 11. [/5.2 Points] SERCP11 3.A.P.031. ASK YOUR TEACHER How long does it take an automobile traveling in the left lane of a highway at 45.0 km/h to overtake (become even with) another car that is traveling in the right lane at 40.0 km/h when the cars' front bumpers are initially 50 m apart? :15 12. [-l5.2 Points] SERCP11 3.A.P.044. ASK YOUR TEACHER A 2.00-m-tall basketball player is standing on the floor 100 m from the basket, as in the figure below. If he shoots the ball at a 40.0 angle with the horizontal, at what initial speed must he throw the basketball so that it goes through the hoop without striking the backboard? The height of the basket is 3.05 m. M1