For a certain interval of time, an object is acted on by a constant non-zero force. Which of the following statements is true for this interval of time? (Select all that apply.) A. The object is at rest.
B. The object's velocity changes.
C. The object's velocity can only increase.
D. The object is moving with constant velocity.
E. The object is accelerating.

For a certain interval of time, an object is acted on by a constant non-zero force. The statements that is  true for this interval of time are  The object's velocity changes and The object is accelerating.

For better understanding lets explain what the related terms in the statement above means

Acceleration is simply known as a change velocity divided by time interval where the said change occurred. The greater the acceleration, the faster the object is speeding up. If the speed is constant, acceleration is zero.Velocity is simply known as the quantity showing both speed and directionSpeed is simply the distance traveled by an object divided by the time interval where the motion occurred. Objects at rest is said to have a speed of 0 m/sForce is simply the main factor that brings about acceleration, or change in an object's velocitytime interval is simply known as the amount of time that passes between two events. it can be measured in seconds, minutes, hours, days, weeks etc.

From the above, we can therefore say that the answer For a certain interval of time, an object is acted on by a constant non-zero force. The statements that is  true for this interval of time are the object's velocity changes and The object is accelerating, is correct.

learn more about interval of time from:

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For a certain interval of time, an object is acted on by a constant non-zero force. For this interval of time . . . . .

A. The object is at rest.  No. From F=ma, if F is not zero, the object can't remain at rest.

B. The object's velocity changes. Yes. From F=ma, if F is not zero, there must be acceleration.

C. The object's velocity can only increase.  No. It might decrease.

D. The object is moving with constant velocity.  No. From F=ma, if F is not zero, there must be acceleration.

E. The object is accelerating. Yes. From F=ma, if F is not zero, there must be acceleration.

At the top of the table the object has a kinetic energy of zero but a gravitational potential energy of mgh. When the object drops and reaches the bottom, its potential gravitational energy is 0, because it all was converted and conserved in kinetic energy that is  

Then of course once it hits the ground the energy is lost to the surroundings.