Unit 2 Problem Set

The diagram below shows a spring scale being used to weigh a 100-gram mass. Which diagram best represents the correct reading for the same spring scale being used to weigh a 200-gram mass?

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Tags

NGSS.MS-PS2-2

The diagram below shows a student using a spring scale to pull a wooden block up a ramp that is resting on a stack of books. Which change would require more force to pull the wooden block up the ramp?

• Have the student use two hands.
• Reduce the mass of the wooden block.
• Restack the books so the thinnest book is on the bottom.
• Glue sandpaper to the surface of the ramp.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

In a car accident, a seat belt helps prevent injuries by applying a force

• less than the force of the moving passenger
• greater than the force of the moving car
• in the same direction as the car’s motion
• in the opposite direction of the passenger’s motion

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Mrs. Wilson’s science class is graphing the movement of vehicles passing their school. Which line graph shows a vehicle slowing down?

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The graph below relates velocity to time. The graph would most likely apply to which of the following events?

• A soccer ball that is at rest is suddenly kicked.
• A ball is thrown upward and returns to the ground.
• A person who is running at a constant speed decides to run faster.
• A car traveling at a constant speed applies its brakes and comes to a stop.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A car and a truck move on a road in the same direction at the same speed. Both vehicles slow down with the same stopping force. Which statement best explains why the truck needs more distance to stop?

• The truck is longer.
• The truck has more mass.
• The truck has larger wheels.
• The truck has a larger engine.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

This graph shows the motion of a person riding a bicycle. Which time period shows the acceleration of the bicycle?

• 0–4 s
• 4–8 s
• 8–10 s
• 10–16 s

Tags

NGSS.MS-PS3-1

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• II
• III
• IV

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

• The object increased its speed.
• The object decreased its speed.
• The object stopped moving.
• The object changed directions.

Tags

NGSS.MS-PS3-1

Which graph represents a moving object with a constant speed throughout its entire travel time?

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Tags

NGSS.MS-PS3-1