Dave is riding on a straight path. after 5 s, his speed is 3.0 m/s. after 7 s, his speed is 5.0 m/s. after 10 s, his speed was 7.0 m/s. what was his acceleration from 5 s to 10 s?

Acceleration= change

Time
The change in velocity is 4 m/s b/c 7-3=4.

The time taken is 5 s b/c 10-5 = 5.

So its 4/5 which is
0.8 m/s^2.

You're welcome.

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