Understanding Velocity and Momentum

What is the definition of velocity?

• The rate of change of distance with respect to time.

• The rate of change of displacement with respect to time.

• The total distance traveled divided by the total time taken.

• The force applied to an object divided by its mass.

What is the definition of momentum?

• The product of mass and velocity of an object.

• The rate of change of velocity with respect to time.

• The force applied to an object over a period of time.

• The energy possessed by an object due to its motion.

Tags

NGSS.HS-PS2-2

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

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

• Speed includes direction, while velocity does not.

• Speed is the magnitude of velocity, while velocity includes direction.

• Speed is always greater than velocity.

What are the SI units of velocity?

• meters per second (m/s)

• kilometers per hour (km/h)

• miles per hour (mph)

• feet per second (ft/s)

What are the SI units of momentum?

• kilogram meter per second (kg·m/s)

• newton meter (N·m)

• joule (J)

• watt (W)

Tags

NGSS.HS-PS2-2

If a car travels 100 meters north in 10 seconds, what is its velocity?

• 10 m/s

• 10 m/s north

• 100 m/s

• 100 m/s north

A 5 kg object is moving with a velocity of 3 m/s. What is its momentum?

• 15 kg·m/s

• 8 kg·m/s

• 5 kg·m/s

• 3 kg·m/s

Tags

NGSS.HS-PS2-2

Which of the following scenarios best illustrates the concept of velocity?

• A car traveling at 60 km/h.

• A runner completing a 100-meter dash in 10 seconds.

• A cyclist moving at 20 km/h east.

• A plane flying at 500 mph.

A ball is thrown straight up with a velocity of 20 m/s. What will be its velocity at the highest point?

• 20 m/s

• 0 m/s

• 10 m/s

• -20 m/s

If two objects have the same speed but different velocities, what can be inferred about their motion?

• They are moving in the same direction.

• They are moving in different directions.

• They have the same momentum.

• They have different masses.