Question detail

If an object travels 100 meters in 5 seconds, what is its speed?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Forces and motion

Question

A. 20 m/s
B. 15 m/s
C. 25 m/s
D. 10 m/s

Answer

20 m/s

Explanation

Speed is calculated using the formula speed = distance / time. Here, speed = 100 m / 5 s = 20 m/s.

Common mistake

Misunderstanding Gradient Interpretation

Students often confuse the gradient of a distance-time graph with the total distance travelled instead of understanding it represents speed.

Emphasize that the gradient indicates how fast an object is moving, and practice calculating speed from the gradient using the formula: speed = distance/time.

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