Q. A ball is dropped from a height of 45 m. How long will it take to reach the ground? (g = 10 m/s²) (2023)
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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
Time = √(2h/g) = √(2 × 45 m/10 m/s²) = √(9) = 3 s
Correct Answer: B — 4 s
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Q. A car accelerates from rest to a speed of 100 km/h in 10 seconds. What is its acceleration? (2023)
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A.
5 m/s²
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B.
10 m/s²
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C.
15 m/s²
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D.
20 m/s²
Solution
Acceleration = (Final Speed - Initial Speed)/Time = (100 km/h × (1000 m/3600 s))/10 s = 5 m/s²
Correct Answer: A — 5 m/s²
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Q. A car travels 60 km in 1 hour. What is its speed in km/h? (2023)
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A.
30 km/h
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B.
60 km/h
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C.
90 km/h
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D.
120 km/h
Solution
Speed = Distance/Time = 60 km/1 h = 60 km/h
Correct Answer: B — 60 km/h
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Q. A cyclist covers 15 km in 30 minutes. What is the speed in km/h? (2023)
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A.
20 km/h
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B.
25 km/h
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C.
30 km/h
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D.
35 km/h
Solution
Speed = Distance/Time = 15 km/(30/60) h = 30 km/h
Correct Answer: B — 25 km/h
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Q. A runner completes a 400 m track in 50 seconds. What is their speed in m/s? (2023)
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A.
6 m/s
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B.
7 m/s
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C.
8 m/s
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D.
9 m/s
Solution
Speed = Distance/Time = 400 m/50 s = 8 m/s
Correct Answer: A — 6 m/s
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Q. An object moves with a uniform speed of 15 m/s. How far will it travel in 4 minutes? (2023)
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A.
300 m
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B.
600 m
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C.
900 m
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D.
1200 m
Solution
Distance = Speed × Time = 15 m/s × (4 × 60 s) = 900 m
Correct Answer: C — 900 m
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Q. If a person walks at a speed of 5 km/h, how long will it take to walk 10 km? (2023)
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A.
1 hour
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B.
2 hours
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C.
3 hours
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D.
4 hours
Solution
Time = Distance/Speed = 10 km/5 km/h = 2 hours
Correct Answer: B — 2 hours
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Q. If a train travels at a speed of 80 km/h, how far will it travel in 2.5 hours? (2023)
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A.
150 km
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B.
200 km
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C.
250 km
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D.
300 km
Solution
Distance = Speed × Time = 80 km/h × 2.5 h = 200 km
Correct Answer: C — 250 km
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Q. If a vehicle travels 120 km in 2 hours, what is its average speed? (2023)
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A.
50 km/h
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B.
60 km/h
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C.
70 km/h
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D.
80 km/h
Solution
Average Speed = Total Distance/Total Time = 120 km/2 h = 60 km/h
Correct Answer: B — 60 km/h
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Q. If an object is thrown upwards with a speed of 20 m/s, how high will it go before coming to rest? (g = 10 m/s²) (2023)
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A.
20 m
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B.
40 m
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C.
80 m
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D.
100 m
Solution
Height = (Initial Speed)²/(2 × g) = (20 m/s)²/(2 × 10 m/s²) = 20 m
Correct Answer: B — 40 m
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Q. What is the effect of increasing the voltage in a circuit? (2020)
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A.
Increases current
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B.
Decreases resistance
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C.
Increases resistance
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D.
Decreases current
Solution
Increasing the voltage in a circuit increases the current, according to Ohm's Law.
Correct Answer: A — Increases current
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Q. What is the relationship between current, voltage, and resistance called? (2021)
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A.
Ohm's Law
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B.
Kirchhoff's Law
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C.
Faraday's Law
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D.
Ampere's Law
Solution
The relationship between current, voltage, and resistance is called Ohm's Law.
Correct Answer: A — Ohm's Law
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Q. What is the unit of force? (2020)
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A.
Newton
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B.
Joule
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C.
Pascal
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D.
Watt
Solution
The unit of force is Newton (N).
Correct Answer: A — Newton
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Q. What type of energy is stored in a compressed spring? (2023)
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A.
Kinetic energy
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B.
Potential energy
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C.
Thermal energy
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D.
Chemical energy
Solution
The energy stored in a compressed spring is potential energy.
Correct Answer: B — Potential energy
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Q. Which law states that an object in motion stays in motion unless acted upon by an external force? (2023)
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A.
Newton's First Law
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B.
Newton's Second Law
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C.
Newton's Third Law
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D.
Law of Conservation of Energy
Solution
Newton's First Law states that an object in motion stays in motion unless acted upon by an external force.
Correct Answer: A — Newton's First Law
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