Force and Motion

What will cause an object to move?

• Applied forces

• Balanced forces

• Unbalanced forces

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NGSS.MS-PS2-2

What is Newton's Third Law?

• Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force

• Force = mass x acceleration

• For every action there is an equal and opposite reaction

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NGSS.MS-PS2-1

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)

• The one with a mass of .78 kg will have the greatest acceleration.

• The one with a mass of .52 kg will have the greatest acceleration.

• They will both accelerate at the same rate.

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NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s².  what was the force?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

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NGSS.MS-PS2-2

What is velocity?

• the quickness of an object

• the location of an object

• acceleration

• speed in a specific direction

What is the person doing from 5 seconds to 10 seconds?

• Walking 

• Running

• Standing Still 

• Walking Fast

Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply breaks at the same time to stop.

• The car with the smaller mass will require less force to stop than the car with the larger mass

• The car with the larger mass will require less force to stop than the car with the smaller mass

• The car with the smaller mass will take longer to stop than the car with the larger mass

• The car with the larger mass will have less inertia than the car with the smaller mass

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NGSS.MS-PS2-2

The graph below represents

• Speed

• Velocity

• Acceleration

• Deceleration

• Rocket 1

• Rocket 2

• Rocket 3

• Rocket 4

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NGSS.MS-PS2-2

When a coin is tossed in the air, it travels upward, gradually slows down, momentarily reaches zero speed, then moves back downward with increasing speed. Which statement best explains this change in the coin’s motion?

• The force of gravity causes the coin to change its velocity

• The coin’s inertia decreases on the way up and increases on the way down.

• The action-reaction force pair of gravity and the applied force cancel each other.

• The coin remains in its state of upward motion until the force of friction acts upon it.

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NGSS.MS-PS2-2

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