Question

14.
A car travels 20m in 5s, 25m in next 10s and 30m in the last 10s. The average speed of the motion is
a. 2.0 m/s b. 2.2 m/s c. 30 m/s 0.3 m/s

Answer 1

Explanation:

the answer is 3 m/s

average speed =total distance / total time taken

distance =20+25+30=75m

time=10+5+10=25

so, average speed =75/25 =3 m/s

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