a boy on a motorcycle is moving with speed of 60 km/h. suddenly a child come in front of bike and the boy applies brakes immediately and bring his motorcycle to rest in 3 s.what will be the average regarding force if the mass of the boy and the motorcycle is 290 kg?
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Answer:
the retarding force is 1609.5 N
Explanation:
initial velocity , u = 60 km/hr
final velocity , v= 0 km/hr
time t = 3s
Use v = u + at
a = -(u/t)
a= - ( 60x1000)/(3600x3)
a = -5.55 m/s²
F = mxa
F = - 290x5.55
F = -1609.5N
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