Question

the motorcycle is moving with a velocity of 36 km/h on takes 2 seconds to stop after brakes are applied. calculate the force exerted by the brakes on a motorcycle the mass along with the rider is 100kg​

Answer 1

Answer:

Force=mass*acceleration

f=m×

t

v−u

f=1000×

4

0−108×

18

5

=1000×(−7.5)

∴f=−7500N

opposing force is denoted by negative sign.

Answer 2

Answer:

Initial Velocity (u) - 36km/h - 10m/s

Final Velocity (v) - 0 km/h

Time - 2sec

Acceleration = $\frac{v-u}{t}$ =  $\frac{36 - 0 }{2}$ = 18 m/s²

Mass - 100kg

F = ma (Newton 2nd law of motion

F = 100 × 18 = 1800 N