n on the aves on the right the exerted by a tennis racket on force ball and the

Question

n on the aves on the right the exerted by a tennis racket on force ball and the force exerted by the on thhe nacket during a bal Force on bal plain the shapes of your graphs. Force of ball on o racket Time mass 1500 kg moving at 25.0 m/s collides with a truck of at rest. The bumpers of the two vehicles lock together during mass 4500 the crash. truck pare the force exerted by the car on the truck with that exerted by the car during the collision. Is one force larger than the other or a. Comm are th ey equal in magnitude to each other? b. What is the final velocity of the car and truck just after the collision? Show your calculations. The sa truck bounce off each other completely elastically. Compare the force exerted by the car on the truck with that exerted by the truck on the car during the collision. s one force larger than the other or are they equal in magnitude to each other? me collision as in Question 5 takes place, only this time the car and the

Explanation / Answer

5.

m = mass of automobile = 1500 kg

M = mass of truck = 4500 kg

vi = initial velocity of automobile = 25 m/s

Vi = initial velocity of the truck = 0 m/s

V = final velocity of combination after collision

a.

according to newtons's third law

Force exerted by car on truck is equal in magnitude and opposite in direction to the force exerted by truck on the car .b)

using conservation of momentum

MVi + m vi = (M + m) V

(4500) (0) + (1500) (25) = (4500 + 1500) V

V = 6.25 m/s

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