Question

car is moving with 54 km per hour velocity and brakes were applied and cast of them 0.5 minutes find the retardation?
wrong answer= report​

Answer 1

Answer:

" Initial velocity of car 1=54km/h(15m/s)

For car1,final velocity=0,Time(t)=5(s)

To gain retardation we put equation of motion

V=u+at,

0=15+a5, a=-3 retardation of car1

Distance of car 1=v²-u²=2as

0²-15²=2(-3)s , 0²-225=(-6)s. -225/-6=s

s=37.5m similarly of Car 2

retardation of car 2,. a=-1

Distance covered by car 2

s=50m now put these values on time graph "

Explanation:

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