Question

a bus and a car,both moving with kinetic energy 10000J are retarded by applying breaks so that now both are moving with kinetic energy of 5000J .If the distance travelled by both the bus and car is 50m during this change in kinetic energy,then find the ratio of the retarding forces acting on them


kindly answer it​

Answer 1

Answer:

Hi there !!

Acceleration = a= -2 m/s²

Time = t= 10 secs

Initial velocity = u

Final velocity = v = 0

equation of motion :-

v = u+at

So,

0 = u+(-2 x 10)

u = 2 x 10

= 20 m/s

Initial velocity = 20 m/s

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Answer 2

Answer:

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