Forces Practice

Emily dropped an object out of a window. What force caused it to fall toward the ground?

• Emily must have pushed it down before she let go.
• Emily must have pulled it down before she let go.
• The force of Earth's gravity pulled it downward.
• The friction force of the air moved it downward.

Arlan tried to pick up a box, but the box did not move. Why not?

• Arlan is not using enough force to overcome the force of gravity on the box.
• Arlan's mass is equal to the mass of the box.
• The forces acting on the box are unbalanced.
• Friction hold the box to the ground.

E'zarion was able to push the box with a force that was enough to overcome the force of friction. Which of the following most likely happened?

• The box flipped over
• The box stayed still
• The box opened
• The box moved

A punter kicks a football, sending it soaring into the air. Which term best describes the forces on the moving ball?

• unbalanced
• simple
• combined
• balanced

Two teams play tug of war. The exert a force on each other, and the rope does not move. Which term describes the forces?

• weak
• unbalanced
• strong
• balanced

Edward kicks a soccer ball across the backfield. What force works to slow the ball down?

• pushes and pulls
• friction
• magnetism
• gravitation

Which of the following statements best describes balanced forces?

• Forces that change the motion of objects

• Forces that stop a moving body

• Forces that are equal in strength and opposite in direction

• Forces that increase the speed of a moving body

Give an example of balanced forces.

• Two people pushing a box with equal force in opposite directions.

• A person pushing a box downhill.

• A person pushing a box uphill.

• Two people pulling a box with unequal force in opposite directions.

Give an example of unbalanced forces.

• Pulling a car downhill

• Pushing a car on a flat road

• Pushing a car downhill

• Pushing a car uphill

Force

• a push or pull

• not in motion

• an object's location