UNIT 1 Motion

If you were standing under the tree, which object would appear to be moving?

• The building

• The tree

• The boy

• The airplane

Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 2 s. What is your acceleration?

• 6 m/s²

• 4 m/s²

• 2 m/s²

• 1 m/s²

Tags

NGSS.HS-PS2-1

Speed is the ratio of the distance an object moves to:

• the amount of time needed to travel the distance

• the motion of the object.

• the direction the object moves.

• the displacement of the object.

Tags

NGSS.MS-PS3-1

A person walks 1 mile every day for exercise, leaving her front porch at 9:00 A.M. and returning to her front porch at 9:25 A.M. What is the total displacement of her daily walk?

• 0

• 25 minutes

• 1 mile

• None of the above

An object moving at 30 m/s takes 5 seconds to come to a stop. What is the acceleration?

• -6 m/s²

• 6 m/s²

• -30 m/s²

• 30 m/s²

Tags

NGSS.HS-PS2-1

An object that is accelerating may be: a. Changing direction b. Gaining speed c. slowing down d. All of the above

• Changing direction

• Gaining speed

• slowing down

• All of the above

Tags

NGSS.MS-PS3-5

The slope of a speed-time graph indicates:

• Acceleration

• Speed

• Velocity

A passenger in the rear seat of a car moving at a steady speed is at rest relative to:

• A pedestrian on the corner ahead

• The front seat of the car

• The side of the road

• The wheels of the car

The slope of a line of a time-distance graph is:

• Time

• Speed

• Displacement

• Distance

A person walks 1 mile every day for exercise, leaving their front porch at 9:00 am and returning to her front porch at 9:25 am. What is the total displacement of her daily walk?

• 0

• 25 minutes

• 1 mile

• None of the above