Newton's Laws and Calculating Net Forces

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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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

• I don't know

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

• ant

• cat

• truck

• skateboard

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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?

• 350N to the left

• 350N to the right

• 50N to the left

• 50N to the right

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NGSS.MS-PS2-2

A balanced force has

• some net force

• a wee bit of net force

• no net force

• a lot of net force

The sum of all forces acting on an object is

• contact force

• balanced force

• unbalanced force

• net force

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The tendency of an object to resist a change in its motion is

• acceleration

• inertia

• mass

• frame of reference

What happens when two forces act in the same direction?

• They cancel each other out.

• The stronger one prevails.

• Their strengths are added.

• Their sum divided by the number of forces is the total force.

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NGSS.MS-PS2-2

Which force produces a change in motion?

• gravitational force

• frictional force

• balanced force

• unbalanced force

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