Force and Motion

_ means "to apply a force."

• Velocity

• Exert

• Effect

• Mass

• Friction

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

_ means "a push or pull that can move an object."

• Velocity

• Exert

• Friction

• Mass

• Force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

_ means "the speed and direction of an object"

• Velocity

• Exert

• Mass

• Force

• Friction

Tags

NGSS.MS-PS3-1

Velocity describes which two components?

• mass

• speed

• direction

• weight

• height

Check the ways that an object's motion can change.

• start moving

• stop moving

• speed up

• slow down

• move in opposite direction

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Sandra pushed a wooden block and it slid across the floor. The wooden block gradually slowed down and stopped after moving 10 meters.

Why did the block stop moving?

• The floor exerted a force that is opposite to the direction of the block’s motion.

• The block ran out of force.

• The floor absorbs force from the block.

• All objects stop moving because their natural state is to be still.

Tags

NGSS.MS-PS2-2

Miniature golf is a game in which players hit a golf ball with a club, which causes the ball to roll along the flat ground. Three golf balls with the same mass were rolling on the ground. Each ball was hit by a golf club, but not from the same direction. All the golf balls changed speed as a result of being hit. Use the information in the diagram to answer.

Which golf ball(s) experienced the strongest force when hit? How do you know?

• The white and purple golf balls because they gained force, while the green golf ball lost force.

• The green golf ball because it takes a stronger force to slow something down than to speed something up.

• The green golf ball because it changed speed the most.

• The white golf ball because it has the fastest ending speed.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Officials are looking into three different ski accidents. The accidents happened when three skiers (all with the same mass) were skiing across flat, snowy ground. They were each bumped by another skier, but not all from the same direction. These skiers changed speed as a result of being bumped. Use the information in the diagram to answer.

Which skier(s) experienced the strongest force when bumped? How do you know?

• The skiers in the yellow and purple sweaters; they both gained the same force as they sped up, but the skier in the red sweater lost force and slowed down.

• The skier in the yellow sweater experienced the strongest force because he has the fastest ending speed.

• All three skiers experienced the same strength force because they changed speed by the same amount.

• The skier in the red sweater because it takes a stronger force to slow something down than to speed it up.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

At dinner, Hans passed the salt shaker to his sister Jessica by sliding it across the wooden table. The salt shaker gradually slowed down and stopped after moving 12 centimeters.

Why did the salt shaker stop moving?

• The salt shaker ran out of force.

• The table exerts a force that is opposite to the salt shaker's motion.

• The table absorbs force from the salt shaker.

• All objects stop moving because their natural state is to be still.

Tags

NGSS.MS-PS2-2

Which image (A or B) shows the direction someone would need to kick the ball in order to move it toward the goal?

• Image A

• Image B

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2