Describing Motion and Force Quiz

What happens to an object when balanced forces act on it?

• It accelerates in one direction
• It remains at rest or moves at a constant speed
• It changes direction
• It stops moving

Which of the following is an example of unbalanced forces?

• A book on a table
• Two people pushing a car with equal force
• A soccer ball being kicked
• A person standing still

If a car's engine produces a force of 400 N forward and friction provides a force of 300 N backward, what is the net force?

• 100 N forward
• 700 N forward
• 100 N backward
• 300 N forward

What is the main effect of unbalanced forces on an object?

• It remains at rest
• It changes its motion
• It moves at a constant speed
• It experiences no motion

In the case of a book resting on a table, which forces are balanced?

• Gravity and friction
• Gravity and normal force
• Normal force and applied force
• Friction and applied force

What is acceleration?

• The speed of an object
• The distance traveled by an object
• The rate of change of velocity
• The direction of motion

Which of the following best describes velocity?

• Speed with no direction
• Speed with a direction
• Distance traveled
• Rate of acceleration

When a person pushes off the ground while on a skateboard, what type of forces are acting?

• Balanced forces
• Unbalanced forces
• Equal forces
• No forces

What will happen to a soccer ball if the force of the kick is greater than the friction?

• It will remain still
• It will roll backward
• It will accelerate in the direction of the kick
• It will change direction

If two people push a car in opposite directions with equal force, what will happen to the car?

• It will move forward
• It will move backward
• It will not move
• It will accelerate