Forces and Kinematics

Which of the following is impossible:

• Negative displacement.

• Negative velocity.

• Negative acceleration.

• Negative speed.

• Negative position.

Acceleration means:

• slowing down.

• speeding up.

• changing direction.

• going very fast.

• balanced forces.

Tags

NGSS.MS-PS2-2

Changing the velocity means acceleration. However, if you change the acceleration of an object, that is called:

• Absement

• Speed

• Jerk

• Derivative

• Integral

Tags

NGSS.HS-PS2-1

Which of the following is the more accurate version of the gravitational field on planet earth?

• 10 m/s

• 10 m/s²

• 9.81 m/s

• 9.81 m/s²

Your velocity at a certain moment is called:

• Instantaneous Velocity

• Average Velocity

• Tangential Velocity

• Constant Velocity

• Uniformly Accelerated Motion

The gravitational field is approximately 10 m/s². What does this mean?

• Things fall at a constant velocity of 10 m/s.

• Things falling get faster by 10 m/s for every second that goes by.

• Things falling eventually reach a terminal velocity of 10 m/s.

• Things falling move 10 meters every second that goes by.

Tags

NGSS.MS-PS2-4

Acceleration is calculated by:

• how far an object goes divided by the time to get there.

• total falling time divided by terminal velocity.

• change in velocity divided by time needed to accomplish change.

• change in velocity divided by distance to accomplish change.

Which of the following statements is true?

• Speed is a scalar | Velocity is a vector

• Speed is a vector | Velocity is a scalar

• Speed and velocity are the same thing.

• Speed can be negative.

This is a branch of mechanics that describes the motion of a body without regard to the forces or torques.

• Kinesiology

• Kinematics

• Osteokinematics

• Biomechanics

Which of the following is a vector quantity?

• Speed

• Distance

• Displacement

• Time