Unit Review

An object is moving in a straight line at a constant speed. Which of the following graphs best represents the object's motion over time?

• A horizontal line on a distance-time graph

• A straight line with a positive slope on a distance-time graph

• A curved line on a distance-time graph

• A straight line with a negative slope on a distance-time graph

Tags

NGSS.MS-PS3-1

Which of the following scenarios best illustrates balanced forces acting on an object?

• A book resting on a table

• A car accelerating on a highway

• A ball falling from a height

• A magnet attracting a paperclip

If an object is moving at a constant speed, what can be said about the forces acting on it?

• The forces are balanced

• The forces are unbalanced

• There are no forces acting on it

• Gravity is the only force acting on it

Which of the following best describes the effect of friction on a moving object?

• It increases the object's speed

• It decreases the object's speed

• It changes the object's direction

• It has no effect on the object's motion

An object is moving in a circle at a constant speed. Which of the following statements is true about the object's motion?

• The object is accelerating

• The object is not accelerating

• The object is moving in a straight line

• The object is slowing down

Which of the following graphs represents an object that is accelerating?

• A horizontal line on a speed-time graph

• A straight line with a positive slope on a speed-time graph

• A curved line on a speed-time graph

• A straight line with a negative slope on a speed-time graph

Tags

NGSS.MS-PS3-1

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

• 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

Tags

NGSS.MS-PS2-2

Which of the following best describes the role of gravity in the motion of an object?

• It causes objects to move in a straight line

• It causes objects to accelerate towards the Earth

• It has no effect on the motion of objects

• It only affects objects that are not moving

Tags

NGSS.HS-PS2-4

An object is moving with a constant velocity. Which of the following statements is true about the net force acting on the object?

• The net force is zero

• The net force is positive

• The net force is negative

• The net force is changing

Which of the following best describes the effect of magnetism on an object?

• It always repels the object

• It always attracts the object

• It can either attract or repel the object

• It has no effect on the object

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5