Examine the image of the forces acting on a cart. Which additional force can be applied to make the cart move in the opposite direction? (Think carefully about each option!!!)

• 60 N towards the west

• 40 N towards the west

• 40 N towards the east

• 60 N towards the east

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

John and his son are applying forces to move a box, as shown.

What are the magnitude and direction of the net force?

• 3 N towards the east

• 3 N towards the west

• 9 N towards the east

• 9 N towards the west

Tags

NGSS.MS-PS2-2

A student applies forces to a cart. Which model accurately shows a cart that will remain stationary?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

John and Alex play tug-of-war with a rope.

If John wins the game, what would likely be the combination of forces applied?

• Both John and Alex applied a force of 50 N each.

• Both John and Alex applied a force of 50 N each.

• John applied a force of 50 N, and Alex applied a force of 80 N.

• John applied a force of 100 N, and Alex applied a force of 40 N.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A skateboard loaded with boxes is on a level surface. Two forces (F1 and F2) are acting on the skateboard as shown in the image.

What is the net force acting on the skateboard, and in which direction will the skateboard move?

• 55 N; in the same direction as force F1

• 55 N; in the same direction as force F2

• 195 N; in the same direction as force F1

• 195 N; in the same direction as force F2

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A student investigates how unbalanced forces affect the motion of an object. The student applies a force of 2 N to a toy car in the direction shown.

The student wants to slow the motion of the car without causing it to stop or reverse direction. What force should the student apply to the toy car to achieve the desired result?

• 1 N towards the left

• 1 N towards the right

• 2 N towards the right

• 2 N towards the left

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What relationship exists between mass and inertia?

• As mass increases, inertia decreases.

• As mass increases, inertia increases.

• Mass cancels the property of inertia.

• Mass cancels the property of inertia.

The table shows the details of three moving objects.

A student claims that it is easier to stop Object 2 than to stop Objects 1 and 3. What justifies the student’s claim?

• Object 2 has the least mass, so it has the least inertia.

• Object 2 has the least speed, so it requires the most force to stop.

• Object 2 is the slowest, so it experiences the least friction.

• Object 2 is the lightest, so it experiences the smallest gravitational force.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

The image shows two identical wheelbarrows. One is loaded with bricks, and the other is empty.

Samantha pushes each wheelbarrow with the same force. Which wheelbarrow will be most difficult to push?

• Wheelbarrow 2 since it has less mass and, therefore, less inertia

• Wheelbarrow 2 since it has less mass and, therefore, more inertia

• Wheelbarrow 1 since it has more mass and, therefore, less inertia

• Wheelbarrow 1 since it has more mass and, therefore, more inertia

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The image shows a compartment of a stopped train and a ball at rest on its floor. The arrow indicates the direction of motion of the train.

How will the ball move when the train starts from rest and again when it stops?

• When the train starts moving, the ball will move to the right, and when the train stops moving, the ball will continue to move to the right.

• When the train starts moving, the ball will move to the left, and when the train stops moving, the ball will continue to move to the left.

• When the train starts moving, the ball will move to the right, and when the train stops moving, the ball will move to the left.

• When the train starts moving, the ball will move to the left, and when the train stops moving, the ball will move to the right.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5