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WorksheetsIIIrd LAW OF MOTION
Total questions: 10
Worksheet time: 8mins
Action and reaction forces are equaland opposite but even then they do not cancel each other. Why?
action force acts on an object , reaction force acts on the same surface so they do not cancel each other
action force acts on an object , reaction force acts on the same surface so they cancel each other
action force acts one object , reaction force acts on the second object so they do not cancel each other
Reaction force acts on one object , reaction force acts on the same surface so they do not cancel each other
It is difficult to balance our body when we accidently slip on the peel of a banana. Explain why.
Person falls on banan peel, as he is not able to push the ground so no reaction force acts on his foot.
Person falls on banan peel, as he slips from ground so no action force acts on his foot.
Person falls on banan peel, as he is not able percieve the actual momentum on his foot.
Person falls on banan peel, as he is not able to locate the road frictional force on his foot.
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?
The muzzel velocity and recoil velocity of both will be same.
Recoil velocity of lighter rifle will be more.
Momentum of both bullets would be same.
Action is always equal to the reaction.
A bird hits the windscreen of a fast moving car and falls on the bonnet. Which of the two, the car or the bird, suffers greater change in momentum?
Both car and bird suffer equal change in action and reaction forces
Both car and bird suffer equal change in momentum and total momentum of the system is conserved.
Both car and bird suffer unequal change in momentum and total momentum of the system is conserved.
The total momentum of the system is zero.
What will happen to the momentum of an object whose velocity is doubled?
Its momentum gets doubled as momentum is directly proportional to mass of an object.
Its momentum gets halved as momentum is inversly proportional to mass of an object.
Its momentum gets halved as momentum is inversly proportional to velocity of an object.
Its momentum gets doubled as momentum is directly proportional to velocity of an object.
A large truck and a car, both moving with a velocity of magnitude 'v', have an head - on collision and both of them come to a halt after that. If the collision lasts for 1s, Which vehicle suffers greater chnage in momentum?
The change in momentum of car is greater than for the truck.
The change in momentum of a truck is more than for the car.
Final momentum of both car, as well as truck is zero.
Both vehicles experience unequal forces.
If the time taken to bring a ball to rest from a certain velocity v is reduced to half, what will be the change in initial and final momentum.
Initial momentum increases while final momentum remains unaffected.
Initial momentum decreases while final momentum remains unaffected.
Initial momentum and final momentum both gets reduced
Initial momentum and final momentum both remains unaffected.
