Velocity vs Acceleration

What is the main difference between speed and velocity?

• Speed is a scalar quantity, while velocity is a vector quantity.

• Speed includes direction, while velocity does not.

• Speed can be negative, while velocity cannot.

• Speed measures displacement, while velocity measures distance.

Which of the following is true about acceleration?

• Acceleration is the rate of change of velocity over time.

• Acceleration is always positive.

• Acceleration measures the change in speed only.

• Acceleration is a scalar quantity.

If a person walks 20 meters east and then 15 meters west, what is their displacement?

• 5 meters east

• 35 meters

• 20 meters

• 15 meters west

What does a speedometer in a car measure?

• Speed

• Velocity

• Acceleration

• Displacement

Tags

NGSS.MS-PS3-1

What is the acceleration due to gravity near the Earth's surface?

• 9.8 m/s²

• 0 m/s²

• 5 m/s²

• 15 m/s²