In two different experiments, an object of mass moving with a speed of hits two different walls and comes to rest within (i) 3 second, (ii) 5 seconds, respectively.Choose the correct option out of the following:
Impulse and average force acting on the object will be same for both the cases.
Impulse will be same for both the cases but the average force will be different.
Average force will be same for both the cases but the impulse will be different.
Average force and impulse will be different for both the cases.
Get Answer
Impulse, change in momentum,
Given and
Hence, in case (i), when is more than (ii) when
If bullets each of mass are fired with a velocity per second from a machine gun, the force required to hold the gun in position is
By Newton's second law of motion
Two bodies of masses and moving with same velocities are stopped by the same force. Then the ratio of their stopping distances is
A hammer weighing strikes the head of a nail with a speed of drives it by into the wall. The impulse imparted to the wall is
As we know, impulse change in momentum
The force required to stop a car of mass , moving at a speed of over a distance of in is
As we know,
. So force required
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