Newton's Laws Pre-Assessment

On Earth a gallon of milk has the same mass as a gallon of milk in space, but it has a different __________.

• weight

• inertia

• amount of matter

• volume

Tags

NGSS.MS-PS2-4

Which is the best way to determine, without using a balance, if one object's mass is greater than another's?

• Throw the objects at a target and see which one gets there first.

• Put the objects in separate hands and raise and lower them repeatedly.

• Place the objects in water and see which one raises the water level the highest

• It would be impossible to determine which has a greater mass without a balance

A student drops a rock off a bridge and calculates its velocity at 1-second (s) intervals. This diagram shows the rock's downward path after it is dropped off of the bridge.

Which statement best explains what is happening to the speed of the rock?

• Gravity and air resistance are balanced.

• The force of gravity is greater than the force of air resistance.

• The force of air resistance is greater than the force of gravity.

• The force of air resistance is less than the force of gravity.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Students visit an amusement park to observe the kinds of forces acting on the riders of a rollercoaster. The students formulate the following hypotheses based on their observations. Which of these hypotheses would be best supported by evidence?

• The force needed to start the rollercoaster car does not depend on the masses of the riders.

• Gravity provides the force needed to move the car throughout the entire ride.

• Seatbelts work against inertia during the ride.

• Acceleration of the cars always works opposite gravity.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Two bags of oranges are dropped from a roof at the same time. One bag has two oranges, and the other has 14. Which of the following statements is true?

• Bag two is seven times heavier than bag one so it falls seven times faster than bag one.

• Bag two has seven times the force acting on seven times the mass so it falls as fast as bag one.

• Bag one is seven times lighter than bag two so it falls seven times slower than bag two.

• The force acting on bag one and the force acting on bag two are the same.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A rocket's mass is reduced by half, but the force pushing it through space remains the same. What will happen to the rocket's acceleration?

• It will stay the same.

• It will be reduced by half.

• It will double.

• It will quadruple.

Tags

NGSS.MS-PS2-2

Newton's first law states that an object must travel at a constant speed and in ________, unless some outside force compels it to change.

• a straight line

• a curved path

• a cyclic motion

• a wave-like manner

When the net force applied to a rocket is tripled, its acceleration will be __________.

• doubled

• tripled

• unaffected

• one-third

Tags

NGSS.MS-PS2-2

What happens to an object thrown in space?

• It continues to move in the same direction, but eventually it slows down by itself.

• It continues in the same direction, speeding up all the time.

• It continues to move in a circular path.

• It continues to move in the same direction unless it hits something or is affected by gravity or another force.

Tags

NGSS.MS-PS3-1

Which way does a swimmer push to move forward in the water?

• to the right

• to the left

• forward

• backward