Question 18
MediumOriginal questionA scooter starts from rest and reaches 20 m/s in 5 s with uniform acceleration. What is its acceleration?
Show the answer and explanation
CorrectNot quiteAnswer A
Correct answer: A
Explanation
Acceleration = (final velocity − initial velocity) ÷ time.
= (20 − 0) ÷ 5 = 4 m/s².
Worth noting
20 is just the final velocity, 25 adds velocity and time, and 100 multiplies them; acceleration divides the change in velocity by the time.
- Concept
- Calculating acceleration
- Typical timeTypical
- 60 s
- Your timeYours
- —
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