Motion Test

What is the speed of an object at rest?

• 15 km/h

• 0 km/h

• 1 km/h

• this cannot be determined without further information

Calculate the momentum of a 70-kg person running at a speed of 4 m/s.

• 140 kg·m/s

• 280 kg·m/s

• 350 kg·m/s

• 400 kg·m/s

Tags

NGSS.MS-PS2-2

A sprinter accelerates at 4.5 m/s² for 2 seconds. What is the sprinter’s speed after 2 seconds?

• 9 m/s

• 4.5 m/s

• 2 m/s

• 18 m/s

A ball is dropped from a cliff and falls with an acceleration of 9.8 m/s². How long will it take the ball to reach a speed of 24.5 m/s?

• 2.5 seconds

• 5 seconds

• 10 seconds

• 1 second

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of the following defines velocity?

• The rate of change of position

• The distance an object travels per unit of time

• The speed of an object and the direction of its motion

• The product of an object's mass and velocity

What happens to the momentum of an object if its velocity doubles?

• It remains the same

• It doubles

• It triples

• It is halved

Tags

NGSS.MS-PS3-1

If a car accelerates from 0 to 20 m/s in 5 seconds, what is its acceleration?

• 2 m/s²

• 4 m/s²

• 5 m/s²

• 10 m/s²

Tags

NGSS.MS-PS2-2

What term describes acceleration toward the center of a curved path?

• Uniform acceleration

• Centripetal acceleration

• Projectile motion

• Displacement

Tags

NGSS.MS-PS2-2

Which of the following best represents a scenario where an object’s displacement equals its distance?

• Running around a circular track

• Walking from home to school in a straight line

• Driving from one point and back to the same point

• Traveling in a zigzag pattern

Describe the difference between velocity and speed.

• Speed is the distance traveled per unit of time, while velocity includes both speed and the direction of motion.

• Speed includes direction, while velocity does not.

• Speed is a vector quantity, while velocity is scalar.

• Speed is always greater than velocity.

Tags

NGSS.MS-PS3-1