Question 281· Measurements and units· JAMB
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- Explanation and discussion
Question 282· Measurements and units· JAMB
The smallest reading that can be taken with a standard pair of vernier calipers is
Explanation and discussionQuestion 283· Measurements and units· JAMB
A micrometer screw gauge shows 5.5 mm on the sleeve and 28 divisions on the thimble, each division 0.01 mm. The reading is
Explanation and discussionQuestion 284· Measurements and units· JAMB
The dimensions of force are
Explanation and discussionQuestion 285· Measurements and units· JAMB
The dimensions of work are
Explanation and discussionQuestion 286· Measurements and units· JAMB
Which of the following is a derived unit?
Explanation and discussionQuestion 287· Measurements and units· JAMB
Which pair of quantities has the same dimensions?
Explanation and discussionQuestion 288· Measurements and units· JAMB
On a micrometer screw gauge, the sleeve reads 5.5 mm and the thimble reads 0.28 mm. What is the reading?
Explanation and discussionQuestion 289· Motion· JAMB
The distance-time graph shows a cyclist's journey. Find the cyclist's speed during the first 3 seconds.
Explanation and discussionQuestion 290· Motion· JAMB
A parcel is released from a helicopter flying horizontally at 25 m/s, 45 m above level ground. How far ahead of the release point does it land? [g = 10 m/s², ignore air resistance]
Explanation and discussionQuestion 291· Motion· JAMB
A car moving at 20 m/s decelerates uniformly at 4 m/s². How far does it travel before stopping?
Explanation and discussionQuestion 292· Motion· JAMB
An object is dropped from rest. How far does it fall in the first 3 seconds?
Explanation and discussionQuestion 293· Motion· JAMB
Using the distance-time graph, find the cyclist's average speed for the whole journey.
Explanation and discussionQuestion 294· Motion· JAMB
A body accelerates uniformly from 10 m/s to 30 m/s in 4 s. Find the distance covered in that time.
Explanation and discussionQuestion 295· Motion· JAMB
A projectile is fired at 30° to the horizontal with a speed of 40 m/s. Its time of flight is: (g = 10 m/s²)
Explanation and discussionQuestion 296· Motion· JAMB
A stone is thrown horizontally at 15 m/s from the top of a cliff 80 m high. How far from the foot of the cliff does it land?
Explanation and discussionQuestion 297· Motion· JAMB
A 2 kg trolley moving at 6 m/s hits a stationary 4 kg trolley and they move together. Find their common velocity.
Explanation and discussionQuestion 298· Motion· JAMB
A body moves round a circle of radius 2 m at a steady 4 m/s. Find its centripetal acceleration.
Explanation and discussionQuestion 299· Motion· JAMB
A stone is dropped from a height of 45 m. How long does it take to reach the ground? (g = 10 m/s²)
Explanation and discussionQuestion 300· Motion· JAMB
Newton's first law of motion is also called the law of
Explanation and discussion
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