Science 6 Rocket Sled Pre-test 24-25

A block kept on a frictionless horizontal surface is acted upon by a force of 100 N, as shown in the figure above.  How much force must be applied on the block from the opposite direction to stop its motion?

• 50 N

• 75 N

• 100 N

• 200 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following would not be an action-reaction pair according to Newton’s Third Law of Motion?

• A boy sits in a chair, and the floor pushes on the boy.

• An oar pushes the water, and the water pushes the oar.

• A missile pushes a gas, and the gas pushes the missile.

• A baseball bat hits a ball, and the ball hits the baseball bat.

Tags

NGSS.MS-PS2-1

Two students measured the acceleration of a model boat being acted on by varying forces. According to the data table how much force is acting on the model boat when the students measured an acceleration of 3.0 m/s²?

• 5 N

• 9 N

• 10 N

• 15 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Three forces are acting upon the box shown in the diagram above. Assuming there is no friction between the floor and the ground, how will these forces affect the position of the box?

• The forces will cause the box to move to the left.

• The forces will cause the box to move to the right.

• The forces will cause the box to collapse to the ground.

• The forces will be unable to move the box in any direction.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

At the top of its swing, the pendulum, in the diagram above, has zero kinetic energy. How much potential energy does it have at the bottom of its swing?

• zero

• maximum

• half as much

• one-quarter as much

Tags

NGSS.MS-PS3-2

When riding a roller coaster, you go up and down many hills. When do you have the least amount of kinetic energy?

• at the top of each hill

• at the bottom of each hill

• as you go up each hill

• as you go down each hill

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Two ropes are tied to a steel ring, and a student holds the free end of each rope. The students then pull the ropes in a tug-of-war. If the forces exerted by the students are unbalanced, what happens to the ring?

• The ring remains at rest.

• The ring moves at a constant velocity.

• The ring accelerates in the direction of the net unbalanced force.

• The ring accelerates in the direction opposite the net unbalanced force.

Tags

NGSS.MS-PS2-2

What happens to the potential energy of the rock as it falls off the side of a cliff?

• The kinetic energy decreases as the potential energy increases.

• The kinetic energy decreases as the potential energy decreases.

• The potential energy decreases as the kinetic energy increases.

• The potential energy decreases as the kinetic energy decreases.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Refer to the diagram above to finish the statement. When the ball is at position P, _______________.

• the ball has no energy

• all of the ball's energy is kinetic

• it has both potential and kinetic energy

• all of the ball's energy is potential

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When riding a roller coaster, you go up and down many hills. As you get to the top of the roller coaster, what energy change is taking place?

• Chemical energy is changed into heat energy.

• Heat energy is changed into chemical energy.

• Potential energy is changed into kinetic energy.

• Kinetic energy is changed into potential energy.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5