Advertisements
Advertisements
प्रश्न
Calculate the momentum of the following :
(a) an elephant of mass 2000 kg moving at 5 m/s
(b) a bullet of mass 0.02 kg moving at 400 m/s
Advertisements
उत्तर
(a) We know that:
Momentum = mass × velocity
= m × v
Here, mass, m = 2000 kg
velocity, v = 5 m/s
Putting these values in the above formula, we get:
Momentum = 2000 × 5 kg.m/s = 10000 kg.m/s
(b) We know that:
Momentum = mass × velocity
= m × v
Here, mass, m = 0.02 kg
And, velocity, v = 400 m/s
Putting these values in the above formula, we get:
Momentum = 0.02 × 400 kg.m/s = 8 kg.m/s
APPEARS IN
संबंधित प्रश्न
Fill in the following blank with suitable word :
(a) ………………is a measure of the inertia of a body.
On what factor does the inertia of a body depend ? Which has more inertia, a cricket ball or a rubber ball of the same size ?
The unit of measuring momentum of a moving body is :
Name the factor on which the inertia of a body depends and state how does it depend on the factor stated by you .
Give two examples to show that greater the mass, greater is the inertia of the body.
Name the two kinds of inertia.
Explain the following :
When a train suddenly moves forward , the passenger standing in the compartment tends to fall backwards .
Explain the following:
Why does dust fly off, when a carpet is hit with a stick?
A man of mass 100 kg has a weight of ______ at the surface of the Earth.
What are the types of inertia? Give an example for each type.
