P5.8 Velocity and acceleration

What is the key difference between speed and velocity?

• Speed includes direction, while velocity does not.

• Velocity includes direction, while speed does not.

• They are interchangeable terms.

What does the gradient of a velocity-time graph represent?

• Distance traveled.

• Speed.

• Acceleration.

If an object is moving at a constant speed around a roundabout, what can be said about its velocity?

• Its velocity is constant.

• Its velocity is continually changing.

• Its velocity is zero.

What does "displacement" mean in the context of motion?

• The total distance traveled.

• The straight line distance in a given direction from a starting point.

• The rate of change of speed.

What happens to the acceleration of a car that is moving at a constant velocity?

• Its acceleration is positive.

• Its acceleration is negative.

• Its acceleration is zero.

How is acceleration defined mathematically?

• Change in velocity divided by time taken.

• Distance divided by time.

• Velocity multiplied by time.

When an object is in constant motion without changing direction, what is true about its acceleration?

• It is constant and non-zero.

• It is continually increasing.

• It is zero.

What is the unit for acceleration in SI units?

• meters per second (m/s).

• meters per second squared (m/s²).

• meters (m).

If an object is slowing down, what can be said about its acceleration?

• It is positive.

• It is negative (deceleration).

• It is constant.

What is a key point to remember about the value of acceleration?

• It should always be a positive value.

• It is a vector quantity and indicates the rate of change of velocity.

• It only applies to objects moving in a straight line.