Exploring Speed, Velocity, and Acceleration in Physics

Which unit is generally most appropriate for measuring speed?

• Miles per hour

• Meters per second

• Feet per second

• Kilometers per hour

What is the primary difference between speed and velocity?

• Speed is a vector while velocity is not.

• Velocity can be calculated without direction.

• They are the same in scientific terms.

• Velocity includes direction, speed does not.

If a car travels 30 kilometers in 2 hours, what is its speed?

• 30 km/h

• 60 km/h

• 15 km/h

• 120 km/h

If a runner covers 400 meters in 65 seconds, what is their speed?

• 7.2 m/s

• 6.5 m/s

• 6.15 m/s

• 5.5 m/s

Tags

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Which of the following is a scalar quantity?

• Velocity

• Acceleration

• Speed

• Force

What does the vector nature of velocity imply?

• It cannot be zero.

• It only has magnitude.

• It has both magnitude and direction.

• It is not affected by gravitational forces.

How is acceleration calculated?

• Initial velocity minus final velocity

• Velocity divided by time

• Distance divided by time squared

• Change in velocity over time

What does negative acceleration indicate?

• The object is slowing down.

• The object is moving in reverse.

• The object is speeding up.

• The object is stationary.

What is the unit of acceleration?

• Meters per second squared

• Meters per second

• Miles per hour per second

• Kilometers per hour squared

What does it mean when acceleration is described as 'change in velocity'?

• It includes changes in speed and/or direction.

• It only refers to increasing speed.

• It refers to changes in direction only.

• It is unrelated to velocity.