What are Speed & Velocity?

Which statement accurately describes speed?

• It is a vector quantity with both magnitude and direction.

• It is the rate at which an object changes its position.

• It is a scalar quantity that only has magnitude and is always a positive value.

• Its SI unit is meters per second squared.

A car completes one lap around a 1600-meter track in 55 seconds. What is its average speed?

• 29.1 m/s

• 1600 m/s

• 55 m/s

• 0 m/s

What is a key characteristic of velocity that differentiates it from speed?

• Velocity is always a positive value.

• Velocity is measured in meters per second squared.

• Velocity is a scalar quantity, only having magnitude.

• Velocity is a vector quantity, possessing both magnitude and direction.

A car travels from point A to point B, then turns around and stops at point C. The total distance traveled is 24 meters in 7 seconds, and the displacement from A to C is 8 meters to the right. What is the car's average velocity for this journey?

• 3.43 m/s to the right

• 1.14 m/s to the right

• 3.43 m/s to the left

• 1.14 m/s to the left

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In physics, which directions are typically designated as positive?

• Left and down

• Right and up

• Only right

• Only up

How is average velocity calculated?

• Distance divided by time

• Displacement divided by change in time

• Speed multiplied by time

• Change in speed divided by time

What does instantaneous velocity represent?

• The total displacement over an entire journey

• The average speed of an object

• The velocity of an object at a specific moment in time

• The constant rate of change in position

What does the slope of a line on a position-time graph indicate?

• The object's acceleration

• The object's speed

• The object's velocity

• The object's total distance traveled