Speed & Velocity

Velocity is defined as

• Speed without direction

• Total distance traveled

• Time taken to start moving

• Speed in a specific direction

What does speed measure?

• The direction of motion

• The distance covered in a given time

• Has No Direction

• The speed of an object

What is the formula for speed?

• s=d+t

• s=t/d

• s=d/t

• s=dxt

What type of quantity is speed?

• Scalar

• Vector

• Displacement

• Constant

Which of the following statements is TRUE about velocity?

• It has only magnitude

• It refers to the rate of energy used

• It includes both speed and direction

• It is the same as distance

An object travels 100 meters in 20 seconds. What is its speed?

• 0.2 m/s

• 5 m/s

• 200 m/s

• 20 m/s

What is the SI unit for both speed and velocity?

• Kilometers per hour

• Miles per hour

• Meters per second (m/s)

• Seconds

What happens to the speed of an object that doesn’t move?

• It becomes infinite

• It becomes negative

• It is zero

• It increases

Which of the following best describes the difference between speed and velocity?

• Speed has direction, velocity does not

• Speed and direction are always the same

• Speed is scalar, velocity is vector

• Speed has an SI unit, but velocity sometimes does not

A car moves 60 km north in 2 hours. What is its velocity?

• 30 km/hr

• 60 km/hr north

• 120 km/hr

• 30 km/hr north