a vehicle was moving at a speed of 90km per hour. on seeing the brakes and it come to the rest at a distance of 15m. what is its retardation and how long does it take to come at rest?
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Answer:
13.33m s^-2
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Answer:
time = distance/speed
time = 15 / 25
= 3/5
a= v-u/t
0-90÷3/5
a= -150
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