Question

A driver applies brakes and slows down the velocity of the car from 50km per hour to 30 km per hour in 5 seconds. Calculate the acceleration

Answer 1

Answer:

Step-by-step explanation:

INITIAL VELOCITY , U = 50 KM/H

FINAL VELOCITY ,V = 30 KM/H

TIME TAKEN ,T = 5 SEC

                         = 5/60*60

                         = 5/3600

                         = 0.0013 HRS

ACCORDING TO NEWTON'S FIRST LAWS OF MOTION:

V = U + A T

30 = 50+A*0.0013

-20 = A*0.0013

A = -20/0.0013

A = - 15,384.6 KM/H

DECELERATION = 15,384.6 KM /H².

HOPE THIS HELPS.