Unit 8.1 Quiz 4

A baseball player swings their bat and makes contact with a baseball. Which experiences a greater peak force?

• Neither. They exert an equal amount of force on each other.

• The bat applies a greater force on the ball.

• The ball applies a greater force on the bat.

• There is no way to know without measuring with a force meter.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When any two objects make contact, each object applies a force on the other surface they touch. The size and direction of those forces are:

• different size and in the same direction.

• different size and in opposite directions.

• the same size and in the same direction.

• the same size and in opposite directions.

Tags

NGSS.MS-PS2-1

In a collision, if the mass of one of the objects is decreased: 

• the contact forces between the objects decrease.

• the contact forces between the objects increases.

• the contact forces between the objects do not change.

• the contact forces on only one of the objects decreases.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In a collision, if the speed of one of the objects is increased:

• the contact forces between the objects do not change.

• the contact forces between the objects decrease.

• the contact forces between the objects increase.

• the contact forces on only one of the objects increases.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Force is needed:

• for a motionless object to remain still.

• for a moving object to change its speed.

• for a moving object to keep moving at the same speed and direction.

• to prevent a moving object from turning.

Tags

NGSS.MS-PS2-2

If a 60 kg roller skater pushes a 30 kg roller skater with a force of 5 N rightward as shown in the diagram, then what will be the magnitude and direction of the force exerted by the 30 kg roller skater on the 60 kg roller skater be?

• 0 N

• 5 N leftward

• 5 N rightward

• 10 N

Tags

NGSS.MS-PS2-1

When a soccer player heads the ball, how would the forces on the soccer player’s head compare to the forces on the ball?

• The forces on the head would be greater.

• The forces on the ball would be greater.

• The forces would be equal.

• There would only be forces on the ball.

Tags

NGSS.MS-PS2-1

A previous question asked "During a header, how would the forces on the soccer player’s head compare to the forces on the ball?" Explain your answer to that question:

• The forces would cancel each other out.

• The head is more rigid (or harder) than the ball.

• The ball is the only thing moving.

• Forces come in equal and opposite pairs.

Tags

NGSS.MS-PS2-1