Q. A car moving at 15 m/s comes to a stop in 5 seconds. What is its acceleration? (2019)
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A.
-2 m/s²
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B.
-3 m/s²
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C.
-4 m/s²
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D.
-5 m/s²
Solution
Using the formula: acceleration = (final velocity - initial velocity) / time. Acceleration = (0 - 15) / 5 = -3 m/s².
Correct Answer: A — -2 m/s²
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Q. A cyclist travels at a speed of 10 m/s for 15 seconds. What distance does he cover? (2022)
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A.
100 m
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B.
150 m
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C.
200 m
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D.
250 m
Solution
Distance = speed * time = 10 m/s * 15 s = 150 m.
Correct Answer: B — 150 m
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Q. A projectile is launched at an angle of 30 degrees with an initial speed of 20 m/s. What is the maximum height it reaches? (2022)
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A.
5 m
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B.
10 m
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C.
15 m
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D.
20 m
Solution
Using the formula: H = (u² * sin²θ) / (2g). H = (20² * (1/2)) / (2 * 9.8) = 10.2 m, approximately 10 m.
Correct Answer: B — 10 m
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Q. A stone is thrown downward with an initial velocity of 5 m/s from a height of 45 m. How long will it take to hit the ground? (2020)
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A.
3 s
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B.
4 s
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C.
5 s
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D.
6 s
Solution
Using the equation of motion: h = ut + 0.5gt². Solving for t gives t ≈ 4 seconds.
Correct Answer: B — 4 s
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Q. A train starts from rest and accelerates uniformly at 2 m/s². What is its speed after 10 seconds? (2021)
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A.
10 m/s
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B.
20 m/s
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C.
30 m/s
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D.
40 m/s
Solution
Using the formula: final velocity = initial velocity + acceleration * time. Final velocity = 0 + 2 * 10 = 20 m/s.
Correct Answer: B — 20 m/s
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Q. An object moves with a uniform speed of 5 m/s. How far will it travel in 20 seconds? (2023)
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A.
50 m
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B.
75 m
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C.
100 m
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D.
125 m
Solution
Distance = speed * time = 5 m/s * 20 s = 100 m.
Correct Answer: C — 100 m
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