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CBSE - Force
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Practice Question
Force
.
Force
A body of mass 20 kg moves with an acceleration of 2ms
–2
. The rate of change of momentum in S.I. unit is -
(1) 40
(2) 10
(3) 4
(4) 1
Correct Answer: 1
.
Related Questions
Force
1
When force of 1 N acts on mass of 1 kg, which is able to move freely, the object moves with a/an -
(1) speed of 1 ms
–1
(2) speed of 1 kms
–1
(3) acceleration of 10 ms
–2
(4) acceleration of 1 ms
–2
Correct Answer: 4
2
When a car stops suddenly we fall forwards, this is because:
(1) Our body tends to continue to be in motion due to inertia.
(2) Of a reaction force.
(3) Of momentum.
(4) Centripetal force.
Correct Answer: 1
3
Newton's second law of motion-
(1) defines force
(2) defines inertia
(3) gives measure of force
(4) none of these
Correct Answer: 3
4
If A and B are two objects with masses 10 kg and 30 kg respectively then :
(1) A has more inertia than B
(2) B has more inertia than A
(3) A and B have the same inertia
(4) none of the two have inertia
Correct Answer: 2
5
Between a football and stone of same size, the inertia of:
(1) Football is greater.
(2) Stone is greater.
(3) Both the objects is equal.
(4) None of the above.
Correct Answer: 2
