What does a horizontal line on a position-time graph indicate about the object? Possible answers
The object is accelerating.
The object has a position of zero.
The object remains still.
The object remains still.
A box is against a wall. A person pushes on the box, but the box does not move. Is this situation an example of a force?
No, this is not an example of a force because the box did not move.
Yes, this is an example of a force because a force is a push or pull.
No, this is not an example of a force because a force pulls an object.
Yes, this is an example of a force because a force is a push or pull.
When you trip, your foot stops, but your body continues to move forward. Which statement best explains why this happens?
The unbalanced force that stops your foot pulls your body forward.
An unbalanced force pushes your body forward.
An unbalanced force stops your foot but does not act on the rest of your body.
An unbalanced force stops your foot but does not act on the rest of your body.
Which option is the force with the greatest magnitude?
The force needed to lift a pencil
The force needed to lift a hairbrush
The force needed to lift a chair
The force needed to lift a chair
Which is a good description of kinetic energy?
Conserved energy
Energy of motion
Stored energy
Energy of motion
A person throws a ball up into the air. At which point in its path will the ball have the greatest potential energy?
When the ball is still rising
When the ball reaches its highest point
When the ball leaves the person’s hand
When the ball hits the ground