A bus was moving with speed of 54km/h. On applying brakes it stopped in 5s. Calculate it's acceleration .
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Answer: Initial Speed (u)= 54 km /hr = 54 *1000 m / 3600 s = 54*5/18 = 15 m/ s ( 1km = 1000 m and 1hr = 60 mins = 60*60 ...
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Initial vilocity =54km/h=15m/s
Time=5s
Final vilocity=0
Acceleration =v-u/t
0-15/5= -3m/square
Time=5s
Final vilocity=0
Acceleration =v-u/t
0-15/5= -3m/square
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