Forces

You are on the edge of a pool. Your friend pushes you on the water. At which point is gravity pulling you down.

• When you are sitting on the edge of the pool.

• When you are falling into the water.

• Once you hit the water below.

• At all times

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NGSS.5-PS2-1

You are playing tennis with a friend. The ball is is being hit by the tennis rackets. Name Three of the forces that change the motion of the ball.

• The Pulling Force of the rackets

• The Pushing Force of the rackets

• the sideways pull from gravity

• The downwards pull of gravity

• the upward force of the tennis court.

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NGSS.MS-PS2-2

NGSS.MS-PS2-1

You kick a ball 10 meters

Your Friend Kicks the ball 13 meters

Your brother kicks the ball 6 meters

Your cousin kicks the ball 11 meters.

Why Did your Friend when the Contest

• Your friend has longer legs than yours.

• Friction had the greatest effect on the ball.

• Your friend applied the greater amount of force.

• Gravity had the greatest effect on your friend's kick.

You test hot wheels on different surfaces. You record how far the hot wheel traveled on the separate surface. You use the same amount of force for each test.

On Sandpaper the car traveled 7 inches

On the Tile the car traveled 27 inches

On the carpet the car traveled 13 inches

Why did the car roll the farthest on the tile?

• You applied more force on the tile than the other surfaces.

• The tile has less friction than the other surfaces.

• The tile has more friction than the other surfaces.

If a kickball you had 4 times the normal mass of a normal kickball, in which 2 ways would that affect the ball?

If the ball has more mass, then a kick would cause --------- change to the ball's motion. The ball would also move -----------.

• No Change, Faster

• Less Change, Higher

• More Change, Slower

• Less Change, Faster

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NGSS.MS-PS2-2

Patrick is doing an experiment pushing boxes filled with different things on a smooth, level 

        floor.  Circle the box that would move the least amount if he pushes equally hard on all

        boxes.

•        Big box filled with rocks

• big box filled with cotton

•  small box filled with rocks    

• small box filled with cotton

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NGSS.MS-PS2-2

Two forces are acting on a cup on a desk. The cup is not moving. What are the two forces doing to the cup?

Both forces have ------- strength, and are pushing and pulling in ------- directions

• different, no

• zero, the opposite

• same, same

• same, opposite

 Explain the forces that act on a hot air balloon causing it to rise and then to fall.

• The lifting force of the hot air is balanced by the downward pull of gravity.

• The lifting force of the hot air is weaker than the downward pull of gravity.

• Only gravity is pulling on the balloon; there is no lifting force.

• There are no forces acting on the balloon.

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NGSS.MS-PS2-4

Three ants work to push up a blueberry on a rough rough bark skin log. Working together what force did they overcome.

• The force of gravity.

• The upward force of the log against the blueberry.

• the downward force of the blueberry on the bark.

• The friction between the blueberry and the bark.

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NGSS.MS-PS2-4

 A magnet can apply a force to a metal object without touching it causing it to move.  What 

     Force can also cause an object to move without touching it?

• The force of the ground pushing upward

• The Force of Gravity that can pull downward.

• all forces

• Magnetic Force

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NGSS.MS-PS2-3

NGSS.MS-PS2-5