Advertisements
Advertisements
प्रश्न
Two identical bullets are fired one by a light rifle and another by a heavy rifle with the same force. Which rifle will hurt the shoulder more and why?
Advertisements
उत्तर
According to the conservation of momentum, the momentum of each identical bullet fired is equal to the momentum of the light rifle as well as the momentum of the heavy rifle but in opposite direction. So, the light rifle will recoil faster and hence it will hurt the shoulder more.
APPEARS IN
संबंधित प्रश्न
Give one example in the case where the force is of contact.
Give one example in the given cases:-
A force changes the shape of a body
Define the term linear momentum. State its S.I unit.
Complete the following:
1 N = ............kgf (approx)
Which of the following is not the force at a distance:
(a) electrostatic force
(b) gravitational force
(c) frictional force.
(d) magnetic force.
A uniform car of mass 500g travels with a uniform velocity of 25 ms-1 for 5 s. The brakes are then applied and the car is uniformly retarded and comes to rest in further 10 s calculate
1) the retardation
2) the distance which the car travels after the brakes are applied
3) The force exerted by the brakes.
Give two examples each of contact and non-contact forces.
In which of the following sport the turning of the effect of force used
In ‘tug of war’ when two teams pull equally hard, then what happens?
Can you lift or push a book lying on a table without touching it?
