practice test

Which BEST describes a scalar quantity?

• A scalar quantity is described using magnitude only.

• A scalar quantity is described using magnitude and a unit.

• A scalar quantity is described using magnitude, unit, and direction.

• A scalar quantity is described using magnitude, unit, direction, and an arrow.

A car moves forward with an initial velocity of +23.0 m/s. It begins to decelerate at a constant rate of –1.52 m/s² until it comes to a stop after covering about +174. m. Which CORRECTLY CATEGORIZES the given quantities?

• All the quantities are vectors.

• Acceleration is scalar; the rest are vectors.

• Displacement is scalar; the rest are vectors.

• Initial Velocity and Displacement are scalars, and acceleration is a vector.

Which segment signifies that the vehicle is at rest?

• Segment A-B

• Segment C-D

• Segment E-F

• Segment G-H

What is the velocity of the vehicle at segment B-C?

• -2.5 m/s

• -2.67 m/s

• 3 m/s

• -3 m/s

How can one describe the motion of the vehicle at segment G-H?

• The vehicle is at rest.

• The vehicle is not in constant velocity.

• The vehicle is increasing in velocity.

• The vehicle is decreasing in velocity.

How can one describe the motion of the vehicle at segment F?

• The vehicle is decreasing in velocity in the positive direction.

• The vehicle is decreasing in velocity in the negative direction.

• The vehicle is increasing in velocity in the positive direction.

• The vehicle is increasing in velocity in the negative direction.

Which physical quantity of matter can be derived from the slope of a velocity-time graph?

• Velocity

• Position

• Acceleration

• Displacement

Which physical quantity of matter can be derived from the area under a curve of a velocity-time graph?

• Displacement

• Velocity

• Speed

• Acceleration

T/F: There are seven segments in the graph. Three of which denote that the car is at rest.

• True

• False

T/F: The velocity of the car in segment G-H is faster compared to segment F-G.

• True

• False