Brakes are applied to a car travelling at 72km/h so as to stop it in 4 seconds.Find (i) acceleration (ii) distance covered If an object is thrown up at 5m/s,how high will it rise and how much time it takes to reach the highest point
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Answer:
u=72km/h
v=0km/h
t=4sec
a=v-u/t
=0-72/4
=-18 km/s^2
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