Question

which statements describe velocity and acceleration? check all that apply. velocity equals displacement divided by time. all velocities are \instantaneous\ and occur only at a point in time. velocity and acceleration are calculated using the same variables. acceleration equals change in velocity divided by change in time. acceleration is always constant; it cannot vary. average velocity can be found by using several velocities and their total time.

Explanation:

1. Velocity is defined as displacement divided by time, so the first statement is correct.
2. There are average and instantaneous velocities, not all are instantaneous, so the second statement is wrong.
3. Velocity uses displacement and time, acceleration uses change - in - velocity and change - in - time, not the same variables, so the third statement is wrong.
4. Acceleration is change in velocity divided by change in time, so the fourth statement is correct.
5. Acceleration can be variable, not always constant, so the fifth statement is wrong.
6. Average velocity can be calculated using the total displacement over total time, and also can be found from multiple velocities and their time - intervals, so the sixth statement is correct.

Answer:

Velocity equals displacement divided by time.
Acceleration equals change in velocity divided by change in time.
Average velocity can be found by using several velocities and their total time.