Force and Motion Review Part 1

When a net force is applied to an object, that means that the object:

• has more mass

• accelerates

• remains motionless

• has less momentum

What causes an object to have weight?

• Weight only depends on the type of atoms in an object.

• An object's weight and mass have nothing to do with each other.

• Weight is determined by an object's size.

• Weight is gravity's force on an object's mass.

Which statement is a correct explanation for balanced forces acting on an object?

• The speed of the object decreases.

• The direction of the object changes.

• The speed of the object increases.

• The motion of the object stays the same.

What unit of measuremen t do we use for force?

• Inches

• Meters

• Newtons

• Seconds

An object is traveling in a straight line in space. No forces are affecting it. What will happen to the object's motion?

• It will move faster and faster because there is no force to stop it.

• It will not change. It will continue in the same direction at the same speed.

• It will stop immediately when the force that started its motion goes away.

• It will gradually stop because there is no force to keep it moving.

The diagrams show forces acting on a toy car as it moves to the right. Which diagram shows the toy car that will most likely accelerate to the right based on these conditions.

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NGSS.MS-PS2-2

Four students push carts filled with sports equipment across the gym. Each student pushes with the same amount of force. Which cart has the greatest change in speed?

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NGSS.MS-PS2-2

The diagram below shows a boat moving north in a river at 3 m/s while the current in the river moves south at 1 m/s.

How will the boat be affected if it enters a part of the river where the current is moving south at 2 m/s?

• The boat will move slower.

• The boat will move faster.

• The boat will stop.

• The boat will move to the west.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

If an object does not move at all, what does that mean about the forces acting on the object? 

• The forces are balanced. 
• The forces are unbalanced. 

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NGSS.HS-PS2-1

Is a force that pulls objects toward each other and down to the ground

• Force
• Friction
• Gravity
• weight

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