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Review Answers:
57
The slope of velocity-time graph gives us:
Correct Answer:C
Explanation:
The slope represents acceleration.
58
The time rate of change of linear momentum of a body is equal to:
Correct Answer:A
Explanation:
Newton's second law: F = dp/dt.
59
At what angle of projection of a projectile the range becomes half of its maximum value?
Correct Answer:A
Explanation:
For R = R_max/2, the angle θ satisfies sin(2θ) = 0.5 → θ ≈ 15°.
60
What will be the value of acceleration, if a body of mass 0.5 kg is acted upon by force of 10 N?
Correct Answer:D
Explanation:
a = F/m = 10/0.5 = 20 m/s².
61
What is the time rate of change of linear momentum?
Correct Answer:B
Explanation:
Force equals the time rate of change of momentum (F = dp/dt).
62
Due to sudden rain, which of the following is true for the car moving on the road?
Correct Answer:C
Explanation:
Rain reduces friction, potentially affecting the car's direction.
63
Two bodies of masses 10 kg and 40 kg are dropped from the same height at the same time. Value of which of the following remains the same during the motion of the two bodies?
Correct Answer:A
Explanation:
Both bodies experience the same gravitational acceleration (g).