Forces and Motion

Which of the following best completes this sentence? In every interaction, forces occur in ___________________.

• Specific Places

• Single Units

• One Direction Only

• Pairs

Tags

NGSS.MS-PS2-1

Earth has a large mass, which requires a _____________ force to _________ its motion

• small/maintain

• small/change

• large/maintain

• large/change

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

One force pushes a stationary object east at 10 newtons and another force pushes west at 5 newtons. Which way will the object move?

• East

• West

• North

• South

• It won't move

Tags

NGSS.MS-PS2-2

If you are wearing roller skates and you push against a wall, you roll backwards. Why?

• The wall is bigger than you are, so it pushes you with greater force than you push it.

• Every action has an equal and opposite reaction.

• There is no friction between your roller skates and the floor.

• You and the wall have opposite charges, so the wall repels you.

Tags

NGSS.MS-PS2-1

The overall force acting on an object after all forces are combined is called the:

• unbalanced force

• balanced force

• net force

• air force

Tags

NGSS.MS-PS2-2

If an object is moving at a constant velocity, it means that ________________.

• no net force is acting on it

• a constant force is acting on it in the direction of its motion

• a constant force is acting on it in the opposite direction of its motion

• several forces are acting on it, but one force is greater than the others

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Two opposing forces are acting on a box

Which set of forces will cause the box to move to the right?

• a = 22 N, b = 22 N

• a = 12 N, b = 13 N

• a = 15 N, b = 14 N

• a = 0 N, b = 6 N

Tags

NGSS.MS-PS2-2

If two opposite forces act on a stationary object at the same time, and one is stronger than the other, which way will the object move?

• It will move toward the stronger force.

• It will move toward the weaker force.

• It will move at right angles to the two forces.

• It will not move.

Tags

NGSS.MS-PS2-2

Velocity is the ___________ of an object.

• speed

• direction

• momentum

• speed and direction

The table above is a record of the velocity of a cyclist measured every second for four seconds.

What can be concluded about the motion of the cyclist?

• The cyclist is moving with uniform motion.

• The cyclist is speeding up.

• The cyclist is slowing down.

• The cyclist is constantly changing direction.