TEKS 8.6abc

Based on the law of action-reaction, in what direction will the sled most likely move as the student jumps off?

• North
• South
• East
• West

Tags

NGSS.MS-PS2-1

How can Newton's law of action-reaction best be applied to explain the movement of a rocket?

• As the fuel burns, gases push against the rocket, moving it upward.
• As the fuel burns, gases move out of the rocket and reduce air resistance.
• As the fuel burns, the amss of the rocket decreases.
• As the fuel burns, the rocket moves faster.

Tags

NGSS.MS-PS2-1

Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?

• The coin was at rest until the card was removed, so it tended to remain in the same location.  Once the card was gone, the unbalanced force of gravity caused the coin to fall.
• Moving the card applied an action force on the coin.  Since the card was gone, gravity applied a reaction force on the coin.
• The card had less mass than the coin, so a smaller force of gravity acted on the card.  The larger force of gravity on the coin made it fall.
• The acceleration of the coin falling into the cup was equal and oposite to the acceleration of the card.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Based on this information, what is the acceleration of the cyclist?

• 0.66 m/s backward, because the force of the air slows the cyclist down
• 0.66 m/s forward, because the applied force is greater than the force of the air
• 2.3 m/s backward, because the forces are opposite and not equal
• 2.3 m/s forward, because the cyclist's inertia is greater than the force of the air

Tags

NGSS.MS-PS2-2

Which vehicle has the greatest acceleration as it enters the highway?

• Sedan
• Coupe
• SUV
• Truck

Tags

NGSS.MS-PS2-2

Which toy car had the greatest applied force?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS2-2

Which of these would be the best conclusion based on the data in the table?

• Different surface affect how fast a toy car accelerates.
• Different toy cars travel at different accelerates.
• Gravity has little effect on the speed of toy cars on different surfaces.
• Air resistance is the greatest factor in limiting the acceleration of different toy cars.

Tags

NGSS.MS-PS2-2