Forces and motion

Which picture represents the forces involved when a rocket takes off?

• 
• 
• 
• 

What will happen to this rope?

• it will move to the left because the person is using more force

• it will move to the right because the person is using less force

• it will move to the left because the person is using less force

• it will move to the right because the person is using more force

Two ice skaters moving in a straight line at a constant speed. The forces acting on the skaters are-

• Equal

• Unequal

Are forces balanced or unbalanced when a marble rolls down a ramp?

• Balanced
• Unbalanced

What is a force?

• A push only

• A pull only

• A push and a pull

• A motion

Which could be an example of an unequal force?

• A plate sitting on a dining table
• A ball at the top of a hill that is not moving
• A car traveling in one direction at a constant speed

• A baseball that has been thrown to home plate.

What happens to an object as an unequal forces act on it?

• It causes the object's motion to stay the same

• It causes the object's motion to change

• It causes gravity.

A contact force that can slow down, stop, or make things difficult to move is called

• Magnetism

• Friction

• Forces

• Gravity

Which of the following best describes what is happening as the ball rolls down the hill?

• Gravity is exerting an unequal force on the ball causing it to roll down the hill

• The force of gravity is equal to the force of the air acting on the ball.

• The force of friction causes the ball to roll faster down the hill.

• The force of friction is greater than the force of gravity acting on the ball.

To win the game of tug of war, one player must pull the flag on the rope over their winning line. During their game, the flag tied to the center of the rope is not moving. Which of the following best explains why the rope was not moving?

• They are applying equal forces in the opposite direction (balanced forces)

• They are applying equal forces in the same direction (balanced forces)

• A team is applying more force than the other team (unbalanced force)

• They fall and the forces are unbalanced