Question

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

Answer 1

Explanation:

Given,

m=500g

U=20m/s

F=mav

2

−u

2

=20s

=m(

t

ΔV

)s=

2×10

20×20

=20m

=500×

2

20

=5000N

w=f.x

=5000×20

w=100kg

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