Understanding Speed and Velocity

What is the formula for calculating speed?

• Speed = Time / Distance

• Speed = Distance + Time

• Speed = Distance - Time

• Speed = Distance / Time

How does velocity differ from speed?

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

• Velocity measures distance traveled over time, while speed does not.

• Velocity is always greater than speed.

• Velocity differs from speed in that it includes direction, whereas speed does not.

If a car travels 100 km in 2 hours, what is its speed?

• 25 km/h

• 75 km/h

• 100 km/h

• 50 km/h

What unit is commonly used to measure speed?

• meters per second (m/s)

• liters per minute (L/min)

• grams per second (g/s)

• kilometers per hour (km/h)

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

• No, an object cannot have a speed without a velocity because speed is a component of velocity.

• An object can have a direction without velocity.

• Speed and velocity are the same thing.

• An object can have velocity without speed.

What is the difference between average speed and instantaneous speed?

• Average speed is always higher than instantaneous speed.

• Average speed is the total distance divided by total time; instantaneous speed is the speed at a specific moment.

• Instantaneous speed is the average speed over a long distance.

• Average speed measures speed in kilometers per hour only.

If a runner completes a 400m lap in 50 seconds, what is their average speed?

• 8 m/s

• 10 m/s

• 12 m/s

• 6 m/s

What does it mean for an object to have a negative velocity?

• An object with negative velocity is stationary.

• An object with negative velocity is moving faster than the speed of light.

• An object with negative velocity is moving in the opposite direction to the defined positive direction.

• An object with negative velocity is accelerating positively.

How can you determine the velocity of an object?

• Velocity can be determined using the formula: velocity = displacement / time.

• Velocity is the same as acceleration divided by time.

• Velocity can be calculated using the formula: speed = distance + time.

• Velocity is determined by the mass of the object.

If a cyclist travels 15 km north in 30 minutes, what is their velocity?

• 30 km/h east

• 30 km/h north

• 45 km/h south

• 15 km/h north