a bike is moving with a velocity of 90km/hr. after applying break it stops in 5 sec. calculate the force applied by brakes. mass of motercycle and rides is 200 kg

Question

Physics

Ashley Mcclure

4 September, 12:58

a bike is moving with a velocity of 90km/hr. after applying break it stops in 5 sec. calculate the force applied by brakes. mass of motercycle and rides is 200 kg

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Renee Cunningham · Answer 1

initial velocity (u) = 90 km/s = 25 m/s

time (t) = 5 sec

mass (m) = 200 kg

final velocity (v) = 0 m/s

v = u + at

0 = 25 + a * 5

-25 = 5 a

-5 = a

Therefore acceleration = - 5m/s²

Force = mass * acceleration

F = 200*-5

F = - 1000 N