An object starts from rest with a constant acceleration of 8 m/s along a straight line what is the average velocity over five seconds

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity changes by an equal amount in every equal period of time.

If vo is the initial speed, vf the final speed, and t the time, the acceleration is calculated as follows:

The final speed is calculated by solving the above equation:

The object starts from rest (v0=0) with a constant acceleration of a= 8 m/s^2 during t=5 seconds. Thus the final speed is:

The average velocity (speed in this case) is

Note: The average speed could also be calculated as the distance traveled x by the time. It would lead to identical results.

33: i think it’s b

that would be because of both gravity and friction. so     c