Forces and Motion

Which of the following best describes the effect of gravity on a falling object?

• Gravity pushes the object upwards.

• Gravity pulls the object downwards.

• Gravity has no effect on the object.

• Gravity makes the object move sideways.

Tags

DOK Level 2: Skill/Concept

Design an experiment to demonstrate the difference between balanced and unbalanced forces using a toy car and a ramp. Explain your reasoning and expected outcomes.

• Use a flat ramp and observe the car at rest to show balanced forces; tilt the ramp to show unbalanced forces causing motion.

• Use a flat ramp and observe the car moving to show unbalanced forces; tilt the ramp to show balanced forces.

• Use a tilted ramp and observe the car at rest to show unbalanced forces; use a flat ramp to show balanced forces.

• Use a tilted ramp and observe the car moving to show balanced forces; use a flat ramp to show unbalanced forces.

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DOK Level 3: Strategic Thinking

What happens to the motion of an object when the forces acting on it are unbalanced?

• The object remains at rest.

• The object moves at a constant speed.

• The object changes its speed or direction.

• The object moves in a circular path.

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DOK Level 2: Skill/Concept

Segment C-D: The bus is _________________. It has stopped.

• accelerating

• decelerating

• constant speed

• at rest

Tags

NGSS.MS-PS3-5

The illustration shows the forces in Newtons (N) acting on three different blocks. Which boxes will move under these conditions?

• Blocks 1 and 2

• Blocks 2 and 3

• Blocks 1 and 3

• Blocks 1, 2, and 3

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Andrew and Steve are exerting the same amount of force strength on both sides of the ball.

What do you think will happen to the motion of the ball?

• The ball will not change its motion because they are exerting the same amount of force on both sides.

• The ball will speed up

• The ball start bouncing

• The ball will change its velocity.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

How will this object move? 

• It won't move. 

• It will move to the right. 

• It will move to the left. 

• It will move up. 

Tags

NGSS.MS-PS2-2

Q1. Is the system balanced or unbalanced?

• A) Balanced

• B) Unbalanced

Tags

NGSS.HS-PS2-1

To drag a sofa over carpet, movers sometimes use slippery pads. Which force is reduced with the use of the pads?

• Friction

• Gravity

• Push

• Magnetism

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A child slides down a playground slide. Describe the role of friction in this scenario and how it affects the child's motion.

• Friction increases the child's speed as they slide down.

• Friction decreases the child's speed, allowing them to stop safely at the bottom.

• Friction has no effect on the child's motion.

• Friction causes the child to move upwards on the slide.

Tags

DOK Level 3: Strategic Thinking