Unit 3: Force and Motion

Two girls are pulling on opposite ends of a thick rope. Both girls pull on the rope with the same force but in opposite directions. If both girls continue to pull with the same force, what will most likely happen?

• One girl will pull the other toward her.

• Both girls will stay in the same place.

• Gravity will cause the rope to sag.

• The rope will break.

A student walking quickly while carrying an orange on his lunch tray stops suddenly. The orange will most likely roll off the tray due to

• inertia of the orange.

• centripetal force of the orange

• the friction acting on the orange.

• the balanced forces acting on the orange.

Which of the following is an example of acceleration?

• A book laying on a table
• An airplane moving at a constant speed of 500 mph in a straight line
• A race car going into a curve
• An object at rest

Tags

NGSS.MS-PS2-2

A person pushes against a wall with 15N of force. The wall doesn't move. The wall exerts how much force on the student?

• 15N

• greater than 15N

• less than 15N

• 0N

Tags

NGSS.MS-PS2-1

What is the force exerted when an object has a mass of 3 kg and the acceleration of 9 m/s²?

• 27N

• 3N

• .33N

• 0N

Tags

NGSS.MS-PS2-2

In what direction with the box move?

• right

• left

• up

• down

Tags

NGSS.MS-PS2-2

What is the net force acting on the box?

• 5N

• 25N

• 15N

• 0N

Tags

NGSS.MS-PS2-2

In a game of tug-of-war, there is a force pulling to right with 70N and a force pulling to the left with 68N. What will be the resulting motion?

• to the right

• to the left

• no motion

• everyone will move in the direction they are pulling

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

The wagon is slowing down due to friction.

• balanced forces

• unbalanced forces

Tags

NGSS.HS-PS2-1

The ball is rolling down the hill.

• balanced forces

• unbalanced forces

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4