DOL Quiz 6.8B

Which toy car will move at a greater speed?

• The car in Box 1, because 8 N force to the right is 2 N greater than 6 N.

  
  

• The car in Box 2, because the force of 10 N is greater than the force of 8 N.

• The car in Box 2, because the force of 13 N is 3 N greater than the force of

  10 N.

• The car in Box 1, because it is the only car that will move forward.

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What direction is the toy car in Box 2 moving?

• Moving towards the right, because 10 N is greater than 8 N.

• Moving towards the right because 13 N is greater than 10 N.

• Moving towards the left because the force of 10 N is greater than a force of 13 N.

• Moving towards the left, because the force of 10 N is less than the force of 13 N.

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Why is the toy cart moving down the ramp?

• The upward pushing force of gravity is causing the cart to move down the ramp.

• The downward pulling force of gravity is causing the cart to move down the ramp.

• The friction of the wheels on the ramp caused the cart to move down the ramp.

• The downward pulling force of gravity is causing the cart to stand still on the           ramp.

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Why does the cart increase in speed as it travels down the ramp?

Select TWO answers that apply.

• The speed on the cart is constant as it goes down the ramp.

• The cart increases speed because the force moving toward the right is     greater than the other forces acting in the opposite direction.

• The cart’s mass increases as it goes down the ramp.

• The ramp's surface has no friction.

• The cart increases speed because of the force of gravity acting on it.

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Using the picture above, explain what would happen to the box based on the forces acting on it.

Evaluate responses using AI:

OFF

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If the girl in the picture wants to kick the ball that is moving toward her so that she stops the ball's motion, then she should kick the ball so that the —

• potential energy from her foot is equal and opposite to the force of the ball.

• force from her foot is equal and opposite to the potential energy of the ball.

• force from her foot is equal and opposite to the force of the ball.

• thermal energy from her foot is greater than and opposite to the force of the ball.

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The picture below shows a plane that weighs 735,000 pounds flying in the air.

A force of lift that is greater than the force of gravity will make the plane in flight –

• rise.

• descend.

• move forward.

• move backward.

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The picture below shows a plane that weighs 735,000 pounds flying in the air.

If the wings of a plane in flight produce a force of lift that is the same as the force of gravity, then the plane will –

• hold a constant altitude, or height in the air.

• flip, creating circles in the air.

• rise.

• descend.

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The picture below shows a plane that weighs 735,000 pounds flying in the air.

Using the picture above, explain what would need to happen in order for the plane to descend.

Evaluate responses using AI:

OFF

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Which statement best describes the resulting motion of the duck?

• The duck will stop moving.

• The duck will stop and then start moving again.

• The duck will continue moving in its current direction.

• The duck will move in the direction that the stream is flowing.

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