Question

2 . A body of mass 2 kg is dslopped & from a height of 100m. find the initial momentum, and also the momentum just before it strikes the qake g goround. 10 m/S2.​

Answer 1

Explanation:

Given :

Mass = 2kg

Height = 100m

Gravity= 10m/s²

To Find :

Initial Momentum = ?

Final Momentum = ?

Formula :

Initial momentum = Mass × Initial velocity

Final momentum = Mass × Final velocity

Solution :

1.Since, the ball is in rest the initial velocity of the ball is 0m/s

Initial momentum = (2×0) = 0 kg.m/s

2. Final velocity(v)

= √(2gh)

= √(2×10×100)

= √2000

= 20√5 m/s

Final momentum

= (2×20√5)

= 40√5 kg.m/s

Answer 2

A body of mass 2 kg is dslopped & from a height of 100m. find the initial momentum, and also the momentum just before it strikes the qake g goround. 10 m/S2.

Mass = 2 kg

Height= 100 m

g = 10 m / sec²

Initial momentum = Mass × initial velocity

= 2×0

= 0

Final velocity ( v) = √2gh

= 20√5 m / s

Final momentum = Mass × Velocity

= 40√5 kg m/sec