9" I (1) Ajet plane is initially cruising at 253.0 m/s [W] when suddenly, the pilot turns the engines up to full throttle. After travelling 2.47 km, the jet has a nal velocity of 356.0 m/s [W]. What is the magnitude of the jet's acceleration over the distance traveled? Submit Answer Tries 0/10 32!" 0 (2a) A person walks first at a constant speed of 5.77 m/s along a straight line from point A to point B and then back along the line from point B to point A at a constant speed of 3.18 m/s. What is her average speed over the entire trip? Submit Answer Tries 0/10 (2b) What is her average velocity over the entire trip? Submit Answer Tries 0/10 an 6 (3a) A rock is tossed straight up with a velocity of 35.7 m/s. When it returns, it falls into a hole 10.2 m deep. What is the rocks velocity as it hits the bottom of the hole? [:I Submit Answer Tries 0/10 (3b) How long is the rock in the air, from the instant it is released until it hits the bottom of the hole? Submit Answer Tries 0/ 10 an. 0 (4a) A ball is thrown vertically upward with a speed of 31.8 m/s. What is the ball's velocity after 2.30 s (g = -9.81m/s'\\2)? Submit Answer Tries 0/10 (4b) What is the ball's height above the point of release after 2.3 5? Submit Answer Tries 0/10 1.2 6 6a. You are driving to the grocery store at 17.2 m/s. You are 106.0 m from an intersection when the trafc light turns red. How far are you from the intersection when you begin to apply the brakes? Assume that your reaction time is 0.110 s, that your car brakes with constant acceleration, and that you are initially moving in the positive direction. The reaction time is dened as the time it takes for you to recognize the light is red and to begin applying the brakes. |:] Submit Answer Tries 0/10 6b. What acceleration will bring you to rest as you just reach the intersection? Submit Answer Tries 0/10 6c. How long does it take you to stop? :] Submit Answer Tries 0/10 bi (6a) A baseball is hit so that it travels straight upward after being struck by a bat. A fan observes that it takes 3.7 s for the ball to reach its maximum height. What is the ball's initial speed? : Submit Answer Tries 0/ 10 (6b) What is the maximum height the ball reaches above the bat? Submit Answer an a (7) Tennis player, Bianca Andreescu, moves in a straight line path as shown in the position-time graph below. a. Find her average velocity in the time interval 0 s to 1 s. Submit Answer Submit Answer SubmitAnswer 5.1!- 6 (8a) Anita is sta Ahmed. If she a SubmitAnswer (8b) How far ha b. Find her average velocity in the time interval 0 s to 3 s. c. Find her average velocity in the time interval 0 s to 4 s. Tries 0/10 Tries 0/ 10 Tries 0/ 10 Tries 0/ 10 Tries 0/ 10 5 Anita travelled when she catches Ahmed? :] Submit Answer 1'6 (9) a. The velocitytime graph of a particle moving along the xaxis is shown. The particle has zero velocity at t = 0.00 s and reaches a maximum velocity, vmax, after a total elapsed time, from. If the initial position of the particle is x0 = 8.47 m, the maximum velocity of the particle is vmax = 14.0 m/s, and the total elapsed time is t ma, = 25.5 5, what is the particle's position at t = 17.0 5? Submit Answer SubmitAnswer c. At t = 17.0 s, SubmitAnswer b. At t = 17.0 5, what is the particle's velocity? Tries 0/ 10 Tries 0/10 Tries 0/10 what is the particle's acceleration? Tries 0/10 ccelerates uniformly at 2.1 m/sz, from the time Anita starts skating, how long does it take her to catch Ahmed? (Assume Ahmed remains in motion at constant speed.) V,(mls) nding on her skates on a frozen pond when her brother, Ahmed, moving with a uniform speed of 17.6 m/s, skates by with the hockey puck. After 1.682 s, Anita makes up her mind to chase : t (8) than] in i (TO) A hot air balloon is rising straight up at a constant speed of 6.64 m/s. When the balloon is 12.0 m above the ground, a gun res a pellet straight up from ground level with an initial speed of 29.0 m/s. Along the paths of the balloon and the pellet, there are two places where each of them has the same altitude at the same time. How far above the ground are these places? Enter the smaller altitude rst. Submit Answer Tries 0/ 10 Submit Answer Tries 0/ 10 it! i (11a) An airplane travelling 52.6 m/s at 30.1 below the horizontal when it drops off a package. If the horizontal distance between the point of release and the point at which the package hit the ground is 727.0 m, how long was the package in the air? Submit Answer Tries 0/10 (11b) How high was the plane when it dropped the package? Submit Answer Tries 0/10 at a (12a) A boy kicks a rock off a cliff with a speed of 19.2 m/s at an angle of 50.0a above the horizontal. The rock hits the ground 5.59 s after it was kicked. How high is the cliff? Submit Answer Tries 0/ 10 (12b) What is the speed of the rock right before it hits the ground? [:I Submit Answer Tries 0/ 10 (12c) what is the maximum height of the rock in the air, measured from the top of the cliff? Submit Answer Tries 0/ 10 Submit All