Advertisements
Advertisements
Question
Explain the following :
It is advantageous to run before taking a long jump .
Solution
When running, the athlete brings his body in the state of motion. When the body is in motion, it becomes easier to take a long jump.
APPEARS IN
RELATED QUESTIONS
In the following example, try to identify the number of times the velocity of the ball changes:
“A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team”.
Also identify the agent supplying the force in each case.
Why is it advised to tie any luggage kept on the roof of a bus with a rope?
What name is given to the product of mass and velocity of a body ?
Name the property of bodies (or objects) to resist a change in their state of rest or of motion.
A body of mass 25 kg has a momentum of 125 kg.m/s. Calculate the velocity of the body.
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
The inertia of an object tends to cause an object :
Explain the following:
Why is it difficult to walk on marshy ground?
Inertia of a body depends on
Two blocks of masses 8 kg and 2 kg respectively lie on a smooth horizontal surface in contact with one other. They are pushed by a horizontally applied force of 15 N. Calculate the force exerted on the 2 kg mass.