Inner Orbit Forces of Motion Review

Before the table cloth is pulled the forces acting on the dishes are

• balanced

• unbalanced

• all pushing in the same direction

• stronger than gravity

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NGSS.MS-PS2-1

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One of your friends want to try the tablecloth trick using plastic dishes. What do you predict will happen if we use the dishes with less mass?

• plastic will be harder to move

• plastic will fly off the table

• the plastic will move forward but not off the table

• the results will be the same

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NGSS.MS-PS2-1

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How could you change the force acting on the dishes in the table cloth experiment?

• change the number of dishes

• have only one person pull the tablecloth

• have a stronger student pull with a greater force.

• use a plastic tablecloth

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NGSS.MS-PS2-2

Consider the data from Kayesha's three attemps on a flyboard. What can be determined by the data?

• a smaller force results in a larger acceleration when mass is constant

• a larger acceleration causes the force to increase when mass is constant

• a larger force results in a larger acceleration when mass is constant

• a small mass results in a larger acceleration

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NGSS.MS-PS2-2

If two teams are playing tug of war and the flag stays at the center, what does that tell you about the forces?

• there are no forces acting on the flag

• only the force of gravity is acting on the game

• the forces are balanced

• there are 2 teams, therefore the game is unbalanced

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

True or Fales? If people are added to a game of tug of war this changes the strength of the force.

• true

• false

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In our hot wheels experiment, what affect did changing the mass of the car have on the distance that the car traveled?

• as mass increased, the distance it took for the car to stop decreased.

• as mass increased, the distance it took for the car to stop increased.

• changing the mass of the car didn't affect the distance

• it was impossible to tell

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NGSS.MS-PS2-2

A student wanted to find out if changing the speed of a roller coaster affects the total force acting on the roller coaster. What law are they wanting to investigate?

• Newton's first law of inertia

• Newton's third law for every action there is an equal and opposite reaction

• Gravity

• Newton's Second Law Force= mass x acceleration

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NGSS.MS-PS3-1

When a football player kicks a ball, which of the following best describes the interaction force between the kicker's foot and the ball?

• the player exerts a force on the ball and the ball exerts an equal and opposite force back

• the player's foot exerts a weaker force on the ball compared to the force exerted by the ball on the foot

• the player exerts a stronger force on the ball

• the ball does not exert a force back

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