Forces and Motion | Physics Mdcat | Practice Mcqs | mosaicbro.com

Forces and Motion | Physics Mdcat | Practice Mcqs

7 of 50 questions (Page 2 of 8)

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8 All statements are correct about third law of motion except?
Correct Answer: D
Explanation: Newton's third law states that action and reaction forces act on different bodies, not the same body.
9 If a body starts from a point and returns back to the same point then it’s?
Correct Answer: D
Explanation: Displacement is zero, so average velocity is zero. However, distance is non-zero, so average speed is non-zero.
10 The value of ratio of displacement to distance is?
Correct Answer: D
Explanation: Displacement is always less than or equal to distance, so the ratio is ≤ 1.
11 At which angle (between F and V) when a force acts on a moving object, such that it produces acceleration at constant speed?
Correct Answer: D
Explanation: At 90°, the force acts perpendicular to the velocity, changing direction but not speed, resulting in circular motion.
12 Equations of motion are applicable for?
Correct Answer: A
Explanation: The standard equations of motion are valid only for uniformly accelerated motion.
13 If R is the maximum horizontal distance of projectile then the greatest height attained by projectile in this condition?
Correct Answer: D
Explanation: For maximum range (45°), the maximum height H = R/4.
14 Range of projectile is R when angle of projection is 60°, then the value of other angle of projection for same range is?
Correct Answer: B
Explanation: For a given range, the complementary angles θ and (90° - θ) yield the same range. Here, 60° and 30° are complementary.
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