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. 30 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

Incorrect Unit Usage in Gradient Calculations

Students often forget to use consistent units when calculating the gradient of a velocity-time graph, leading to incorrect answers.

Always ensure that the units for both axes are consistent. For example, if the velocity is in m/s, the time should be in seconds, and ensure to express the gradient in appropriate units like m/s².

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