Question

a car is moving with a uniform velocity of 30 minute per second it is stopped in 2 seconds by applying a force of 1500 Newton through the brakes. Calculate.
A the change in momentum of car B the retardation produced in car and C the mass of the car​

Answer 1

Answer:

v=0

u=30m/s

f=1500N

Acceleration=

(v-u)/t

(0-30)/2

-30/2

-15 m/S2

Retardation= 15m/S2

Force=

F=ma

1500=m(-15)

m=1500/15

m=100kg

Change in momentum=

mv-mu

(-100*0)-(-100*30)

0+3000

3000kg m/s