state law of conservation of momentum give 4 examples
Answers
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the answer is:
⭐Definition:if objects collide, the total momentum before the collision is the same as the total momentum after the collision
⭐eg:A bullet of mass 20 g is fired from a gun with a muzzle velocity 100 ms-1.The mass of the gun is 5 kg.Then the recoil of the gun will be – 0.4 ms-1.The negative sign indicates that the gun recoils i.e moves in the backward direction opposite to the motion of the bullet with a velocity of 4 ms-1.
☺Rockets and jet engines also work on the same principle.In these machines, hot gases produced by burning of fuel rush out with large momentum.The machines gain an equal and opposite momentum.This enables them to move with very high velocities.
☺Ppls going front and back when the bus starts or stops
☺Two cars are stationary at the beginning. If the car having 10kg mass starts to move to the east with a velocity of 5m/s, find thevelocity of the car having mass 4kg with respect to the ground.