Physical Science Aks

Which is the best description for the force vector drawn above?

• -3 N

• +3 cm

• +3 N

• -3 cm

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Of the following measurements, the one that would be incomplete without giving a direction is:

• length.

• force.

• time.

• temperature.

In the picture below, a girl is sitting motionless on a swing. What is the net force on the girl?

• 0 newtons

• 245 newtons upwards

• 490 newtons upwards

• 490 newtons downwards

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Weight is a force that depends on mass and:

• magnetism.

• energy conservation.

• gravity.

• friction.

Tags

NGSS.MS-PS2-4

Luka pushes a box across the floor in the direction shown by the arrow in the diagram.

The direction of the friction force acting on the box is:

• right.

• down.

• up.

• left.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The tires on a car have grooves in them. How do these grooves affect the friction between the tires and the road during wet weather?

• They have no effect on friction.

• They decrease friction.

• They increase friction.

• They first decrease, then increase friction.

A student attempts to slide a block down a smooth, dry ramp as shown, but the block does not move. The most likely explanation is that:

• there are no forces between the block and ramp.

• the ramp is not steep enough for gravity to have any effect.

• the sliding friction between the block and the ramp is lower than the force of gravity pulling the box down the ramp.

• the static friction between the block and the ramp is greater than the force of gravity pulling the box down the ramp.

Tags

NGSS.MS-PS2-4

Which of the following diagrams shows the force vector -2 N?

• A

• B

• C

• D

Which of the following is the largest unit of force?

• Ounce

• Newton

• Kilogram

• Pound

The diagram shows two stacks of books of that has a mass of 3 kg and 6 kg. How do their weights compare?

• The 6 kg stack has twice the weight of the 3 kg stack.

• The 6 kg stack has 1/2 the weight of the 3 kg stack.

• The 6 kg stack has 1/3 the weight than the 3 kg stack.

• They have the same weight.

Tags

NGSS.MS-PS2-4