Velocity Review

Velocity Review

Isaac- Graham

What is velocity

Velocity measures how fast something is moving plus the direction that the object is moving. So a car driving from Baltimore, Maryland, to Norfolk, Virginia, might have a velocity of 70 miles per hour south.

Velocity

Speed is how fast something moves.

Velocity is speed with a direction.

Saying Ariel the Dog runs at 9 km/h (kilometers per hour) is a speed.

But saying he runs 9 km/h Westwards is a velocity.

Multiple Choice

Velocity is both ____ and _____. 

• speed , direction 
• direction, mass
• volume, density 
• direction, magnitude 

Multiple Choice

Which one of these is a vector?

• speed

• velocity

• distance

• time

Multiple Choice

Velocity is...

• distance over time

• distance plus direction

• change in direction

• change in speed and direction

Multiple Choice

Speed is

• the change in distance in a given time
• change in direction
• moving in a specific direction
• moving

Multiple Choice

A truck moving 20 m/s is an example of ...

• Speed
• Distance
• Velocity
• Acceleration

Multiple Select

Choose every statement that is true of velocity.

• Velocity is speed only.

• Velocity is speed and direction.

• Velocity is a vector.

• Velocity has a direction.

Multiple Choice

A plane flying 300 mph west toward California is an example of...

• Speed

• Velocity

• Acceleration

• Direction

Multiple Select

Pick all of the following that are velocities.

• 4 km/s west

• 5 cm/h south

• 2 mph

• 8 cm/year

• 5 m/s up

Multiple Choice

How can acceleration be zero?

• a car runs out of gas and slowly rolls to a stop
• a car decreases speed at a constant rate until it comes to rest
• car has constant speed and is traveling on a straight path
• the car travels round trip and is back at the starting point

Multiple Choice

When are you undergoing an acceleration in a car? 

• speed up
• slow down
• make turns
• All of the above 

Multiple Choice

Acceleration is defined as the CHANGE in

• time it takes for one place to move to another place.

• velocity of an object.

• distance divided by the time interval

• velocity divided by the time interval

Multiple Choice

A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

Multiple Choice

A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest. Find the acceleration.

• 30 m/s

• 24 m/s²

• 9 m/s²

• 81 km/hr