Understanding Speed and Velocity

What is speed?

• Speed is the rate at which an object covers distance.

• Speed is the color of an object.

• Speed is the amount of force applied to an object.

• Speed is the temperature of an object.

How is velocity different from speed?

• Speed can be negative, but velocity cannot.

• Velocity measures distance over time, while speed measures distance only.

• Velocity is always greater than speed.

• Velocity differs from speed in that it is a vector quantity, which includes direction, while speed is a scalar quantity that only measures how fast an object is moving.

If a car travels 60 miles in 1 hour, what is its speed?

• 70 miles per hour

• 30 miles per hour

• 60 miles per hour

• 50 miles per hour

What unit is commonly used to measure speed?

• liters per minute (L/min)

• meters per second (m/s)

• grams per second (g/s)

• kilometers per hour (km/h)

Can an object have a high speed but low velocity? Why or why not?

• Yes, an object can have a high speed but low velocity.

• Velocity is independent of speed.

• High speed always means high velocity.

• An object cannot have high speed and low velocity simultaneously.

What does it mean if an object is moving with constant velocity?

• The object is accelerating in a circular path.

• The object changes speed but not direction.

• The object maintains a steady speed and direction.

• The object is at rest and not moving.

If a runner completes a 400-meter track in 50 seconds, what is their average speed?

• 8 meters per second

• 10 meters per second

• 12 meters per second

• 6 meters per second

What is the formula for calculating speed?

• Speed = Distance + Time

• Speed = Distance / Time

• Speed = Time / Distance

• Speed = Distance - Time

If a car goes 30 km north and then 30 km south, what is its velocity?

• 30 km/h north

• 0 km/h

• 15 km/h

• 60 km/h south

Why is it important to understand the difference between speed and velocity?

• Speed and velocity are the same concept.

• Understanding the difference is only important in physics classes.

• It is important to understand the difference because speed is scalar (magnitude only) and velocity is vector (magnitude and direction), affecting motion analysis.

• Velocity is always greater than speed.