Objective 2 - Force and Motion STAAR review

A motorcycle traveling 35 mi/hr slows as it approaches a stop sign. This is an example of__ (8.6B)

• acceleration

• distance

• speed

• velocity

In the picture above, two teams of students are playing tug-of-war. Each team is pulling in the opposite direction, but both teams are moving in the same direction. Which of the

following best describes the forces in this situation? (8.6A)

• The forces are balanced and the net force is zero.

• The forces are balanced and Team A is exerting a greater force.

• The forces are unbalanced and Team A’s force is greater.

• The forces are unbalanced and Team B’s force is greater.

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A bike racer travels 17 mi/hr in a southerly direction. This is an example of — (8.6B)

• density

• speed

• velocity

• acceleration

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NGSS.MS-PS3-1

When the air is released from a balloon, the air moves out one end and the balloon moves in the other direction. Which statement does this situation best illustrate? (8.6C)

• What goes up must come down.

• For every action there is an equal and opposite reaction.

• The shape and size of an object affect air resistance.

• The acceleration due to Earth’s gravity is 9.8 m/s²

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NGSS.MS-PS2-1

Which graph best represents a car traveling down the freeway at a constant speed? (6.8D)

• 
• 
• 
• 

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NGSS.MS-PS3-1

The graph most likely applies to which activity? (6.8D)

• A basketball bouncing up and down on the ground

• A football at rest, then kicked toward the goalpost

• A car traveling at a constant speed, then stopping as brakes are applied

• A person riding a bicycle in a straight line down a level road at a constant speed

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NGSS.MS-PS2-2

A spring scale is used to pull each of the four objects. Based on the information provided, which object experiences the greatest acceleration when pulled with 8 N of force? (8.6A)

• object R

• object S

• object T

• object U

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NGSS.MS-PS2-2

In the diagram above, a wind turbine is transforming energy from the wind. Between which two steps in the diagram is mechanical energy being converted into electrical energy? (6.9C)

• 1 and 2

• 2 and 3

• 3 and 4

• 4 and 5

10.In a series of controlled experiments, a student measures the force acting on a wheeled cart and the cart’s acceleration. The student’s data are shown below. Based on the recorded observations, what is the mass of the cart in kilograms?

• 20 kg

• 5 kg

• .05 kg

• 10 kg

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NGSS.MS-PS2-2

A toy train engine rests motionless on a track. One student begins pushing the engine to the right with a force of 2 newtons. At the same time, another student begins pushing the engine to the left with a force of 5 newtons. Which of the following best describes the resulting motion of the engine? (8.6A)

• It travels left at 3N

• It travels left at 7N

• It travels right at 3N

• It travels right at 7N

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NGSS.MS-PS2-2