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.

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?