science
Grade-9
Easy
Question
A car covers the first 200 m in 30 seconds and the next 400 m in 30 seconds. Its average speed is ___ m/s.
Hint:
10 m/s
The correct answer is: 10
Average speed = total distance covered / total time taken
= (200 + 400)/ (30 + 30)
= 600/60
= 10 m/s
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