Question

a car of mass 480 kg moving at a speed of 54 km per hour is stopped by applying brake in 10 second calculate the force applied by the brake​

Answer 1

Answer:

m=480 kg

u=54 km/hr =15m/s

t=10s

v=0

F=?

v=u+at

0=15=a10

-15/10=a

a=-1.5m/s2

f=ma

=480 x 1.5

=720N

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Explanation:

Answer 2

Explanation:

given

u=54km/ph

v=0

t=10seconds

a=v-u/t

a=0-15/10

a=-1.5m/s^2

F=ma

F=480×-1.5

F=720kgm/s^2

I took acceleration as retardation so the answer is 720kgm/s^2

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