Question

when brakes were applied to a car of velocity 50m/s if the bullet stops at depth of 10 cm inside the wall find the retardation provided by the ball ​

Answer 1

Answer:

GivenFinal velocity, v=0 m/s ,Retardation, a=−2.5 m/s

2

, Time, t=10s

Step1: : Use firstequation of motion Let u be the initial velocity of the car.

As the acceleration is constantinitial velocity of the car.so we canuse equations of motion

v=u+at 0=u+(−2.5)×10