A car of mass 500 kg travelling at 36 km/hr brought to rest over a distance of 40m find the average retraldation and
average braking force

Explanation:

mass, m = 500 kg

initial velocity, u = 36 km/h = 10 m/s

final velocity, v = 0

distance, s = 40 m

2 × a × 40

0 = 100 + 80 a

- 80a = 100 - 0

-80a = 100

a = -100 / 80

a = -1.25 m/

force, f = ?

mass = 500 kg

acceleration = -1.25 m/s^2

f = ma

= 500 × -1.25

= -625 N

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