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CBSE - Force
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Practice Question
Force
.
Force
A body of mass 5 kg undergoes a change in speed from 20 m/s to 0.20 m/s. The momentum-
(1) increases by 99 kgm/s
(2) decreases by 99 kgm/s
(3) increases by 101 kgm/s
(4) decreases by 101 kgm/s
Correct Answer: 2
.
Related Questions
Force
1
Newton's first law of motion is -
(1) qualitative
(2) quantitative
(3) both qualitative and quantitative
(4) neither qualitative nor quantitative
Correct Answer: 1
2
A 1-kg object is lying on the ground. An unbalanced force of magnitude1 N is applied to the object. Which of these options explains the motion of the object as a result of the acting force?
(1) The object will accelerate in the direction of the applied force.
(2) The object will accelerate in a direction perpendicular to the applied force.
(3) The object will decelerate in the direction of the applied force.
(4) The object will remain at rest.
Correct Answer: 1
3
A gun of mass 5 kg fires a 50g bullet with a velocity of 200 m/s. the recoil velocity of the gun
is:
(1) -2 m/s
(2) 20 m/s
(3) Zero
(4) 0.2m/s
Correct Answer: 1
4
Gram weight is a unit of-
(1) mass
(2) weight
(3) A and B both
(4) neither A nor B
Correct Answer: 2
5
Find the time taken by a body of mass 16 kg to come to rest from a uniform velocity of magnitude 10 m/s, when a force of 4N is applied continuously
(1) 20 s
(2) 30 s
(3) 40 s
(4) 50 s
Correct Answer: 3
