Question

a bicycle moving with a velocity 82 km/h and it takes 5 sec to stop after break applied. calculate the force exerted by the brakes on the bicycle if its mass is 200 kg

Answer 1

Explanation:

Given,

initial velocity (u) = 82km/h

final velocity (v) = 0km/h

time taken (t) = 5sec

mass (m) = 200kg

To find,force we use newton's law of motion..

force (f) = m×(v-u)/t

f = 200×(0-82)/5

f = 200×82/5

f = 40×82

f = 3280

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