Forces KS3

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

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What is the net force on the block? (The overall force)

• 5 Newtons up

• 5 Newtons down

• 15 Newtons up

• 15 Newtons down

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The unit of measurement for forces is

• Joules

• Meters

• Kilograms

• Newtons

If there were no forces acting on a moving object it would

• stay in motion

• come to a stop

• lose speed

• gain speed

What will cause an object to move?

• Applied forces
• Balanced forces
• Unbalanced forces

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NGSS.MS-PS2-2

Balanced or Unbalanced?

• Balanced 
• Unbalanced

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Which example would be a balanced force?

• Train moving at a constant speed in the same direction.

• A skier going down a hill.

• A basketball being passed to a teammate.

• An apple falling to the floor.

What force acts on a skydivers parachute?

• Gravity

• Weight

• Air resistance

• Thrust

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To calculate weight...

• Weight = gravity ÷ mass

• Weight = distance x time

• Weight = volume x distance

• Weight = mass x gravity

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NGSS.MS-PS2-4

What is the gravitational strength of Earth?

• 100 N

• 10 N

• 9.8 N/kg

• 7.6 N/kg