Question

A motorcycle of mass 100 g is running at 10 m/s . If its engine develops an extra linear momentum of 2000Ns calculate the new velocity of motorcycle

Answer 1

Answer:

Mass of motor cycle = m = 100 kg

Velocity of motor cycle = v1= 10 ms−1

Momentum of motor cycle = mv1 = 100 × 10 = 1000 Ns

When engine develops an extra linear momentum of 2000 Ns

Then total momentum of motor cycle = 1000 + 2000 = 3000 Ns

Let v2 = new velocity of the motorcycle.

Total momentum of motor cycle = mv2

3000 = 100 × v2

v2 =

3000100 = 30 ms−1