Forces and Motion

Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

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What is the name for a push or pull?

• A movement
• A force
• Speed
• Density

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friction is a force that acts 

• in the same direction as the motion
• opposite to the direction of the motion
• opposite to the applied forces
• the same direction as the applied force

Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 

• feathers 
• iron
• same
• depends on their friction

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NGSS.MS-PS2-2

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 
• 40N 
• 10N 
• 70N

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What Unit do we Measure Force in? 

• Newtons
• Joules
• Force
• Don't know

Which has more Inertia? (so need more force to move) 

• Truck
• Ant
• A cat
• A skateboard

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NGSS.MS-PS2-2

In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N.What is the net force?

• 50N to the left.
• 350N to the left.
• 350N to the right.
• 50N to the right.

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A balanced force has 

• no net force
• some net force
• a wee bit of net force
• a lot of net force

Any change in an objects speed or direction

• Inertia
• Force
• Acceleration
• Reaction

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