Physics Fundamentals: GPE, KE, Speed, Velocity, and Acceleration

Imagine you're driving a car straight down a road. What is the difference between the speed of the car and its velocity?

• Speed is a vector quantity, while velocity is not.

• Speed can be negative, while velocity cannot.

• Velocity includes direction, while speed does not.

• There is no difference; they are the same.

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A car accelerates from rest to 20 m/s in 4 seconds. What is its acceleration?

If a car is driving down a straight road at a constant speed of 30 m/s, what is its acceleration?

A sports car accelerates from 0 to 60 m/s in 5 seconds on a straight track. What is its average acceleration?

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Imagine a soccer player kicking a ball upwards with an initial velocity of 20 m/s to celebrate a goal. What will be the ball's velocity at the highest point of its trajectory?

• 20 m/s

• 10 m/s

• 0 m/s

• -20 m/s

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Rate at which an object changes its position, including both speed & direction 

• distance

• displacement

• Speed

• Velocity

Speed is:

• calculated by dividing the distance traveled by the time taken.

• zero for objects at rest.

• a measure of how quickly an object gets from one place to another.

• all of these

What is the speed of a car travelling 50m in 4s?

• 200 m/s

• 12.5 m/s

• 12.5 m

• 200m

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