PS 2.1-2.5 Review

The drawing shows a cup on a table. Which statement best describes the relationship between the cup and the table?

• A. The cup is accelerating faster than the table.

• B. The cup is pushing on the table.

• C. The cup is doing work on the table.

• D. The forces on the cup are unbalanced.

Tags

NGSS.MS-PS2-4

The graph shows the motion of a student walking at different speeds. During which time interval does the student walk with a negative acceleration?

• A. 0–2 seconds

• B. 2–4 seconds

• C. 4–8 seconds

• D. 8–12 seconds

Tags

NGSS.HS-PS2-1

After rubbing a rubber brush on wool, Gilbert is able to use the brush to pick up small strips of paper. What causes the paper to be attracted to the brush?

• A. gravity

• B. electric current

• C. static electricity

• D. magnetism

Tags

NGSS.MS-PS2-3

When the two forces are applied to the moving bus, the bus will

• A. come to a complete stop because of unbalanced forces.

• B. accelerate because of unbalanced forces.

• C. slow down because the forces are balanced.

• D. move at a constant speed because the forces are balanced.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Review the diagram. If the ball is at rest on the soccer field and the four forces shown are applied at the same time, the ball will

• A. move to the left.

• B. stay in the same position.

• C. resist any change in movement.

• D. accelerate in the direction of the smallest force.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Two forces act on a block as shown in the picture. What is the net force on the block?

• A. 10 N to the left

• B. 10 N to the right

• C. 30 N to the right

• D. 30 N to the left

Tags

NGSS.MS-PS2-2

Marcus pushes against a refrigerator with a force of 300 newtons (N) to the right. Kelli pushes against the refrigerator with a force of 360 N to the left. How much additional force could Marcus apply in order to overcome the force applied by Kelli?

• A. 60 N to the right

• B. 65 N to the right

• C. 365 N to the left

• D. 660 N to the left

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

At Time 1, a force of F1 is applied to the left side of a block. The block moves to the right with a constant acceleration. Then at Time 2, a smaller force, F2, is applied to the right side of the block while F1 is still being applied. What will most likely happen to the block at Time 2?

• A. It will stop completely.

• B. It will begin to accelerate to the left.

• C. It will accelerate to the right at a faster rate.

• D. It will continue to accelerate to the right at a slower rate.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Brandon pushes an object on a ramp as shown in the diagram. While Brandon pushes the object and it remains in contact with the ramp, which force has the greatest effect on causing it to slow?

• A. the applied force

• B. a frictional force

• C. the force due to gravity

• D. a force of air resistance

Tags

NGSS.MS-PS2-2

A student pushes a box with a force of 15 newtons (N) to make it slide across the floor. Once the box starts moving, a frictional force of 5 N acts upon it. If the student continues to push the box with a force of 15 N, what will happen to the box?

• A. The box will stop moving forward.

• B. The box will move forward at a steady speed.

• C. The box will move forward at a decreased speed.

• D. The box will move forward at an increasing speed.

Tags

NGSS.MS-PS2-2