force and friction

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Multiple Choice

Which of the following is NOT an example of non-contact force?

• Gravitational force
• Magnetic force
• Electrostatic force

• Friction

Match

How does force affect the state of motion of the ball? Match the following.

• The goalkeeper catches the ball

• The player kicks the ball

• The player passes the ball

• The goalkeeper slows down the ball

Make a moving object stop

Make a still object move

Change the direction of a moving object

Change the speed of a moving object

• Make a moving object stop

• Make a still object move

• Change the direction of a moving object

• Change the speed of a moving object

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Multiple Choice

The picture below shows a child pushing a wooden chair.

What is/are the force(s) acting on the chair apart from the pushing force produced by the child?

• Friction only

• Gravitational force only

• Magnetic force and friction

• Friction and gravitational force

Multiple Choice

The boy can move the chair with less force if he put a _____ on the floor.

• carpet

• corrugated paper

• sandpaper

• glass sheet