Question

The velocity of a body of mass 5 kg
changes from 5 m/s to 10 m/s. The
increase in its momentum is​

Answer 1

Mass of the body = 5 kg

Intial velocity of body = 5 m/s

Final velocity of body = 10 m/s

Intial momentum = m × u

Final momentum = m × v

Intial momentum = 5 × 5 = 25 kg m/s

Final momentum = 5 × 10 = 50 kg m/s

Increase in momentum = Final momentum - Intial momentum

= 50 - 25 = 25 kg m/s

Answer 2

Given :

• A body of mass 5 g is moving at 5 m/s. If the velocity increases to 10 m/s.

To find :

• What is the change in momentum in SI units.

Using formula :

★ p = m (v - u).

　

Know Terms :

1. Momentum = (p).
2. Mass = (m).
3. Initial velocity = (u).
4. Final velocity = (v).

　

Calculations :

→ 5 (5)

→ 25

　

→ 5 (10)

→ 50

　

→ 50 - 25

→ 25 N/s

　

Therefore, the change in momentum is 25 N/s.