Quiz: Acceleration and Velocity

What does speed measure?

• How fast an object is going

• How far an object has traveled

• The rate at which an object slows down

What is acceleration?

• How fast an object is going

• The fastest speed that an object can reach

• The rate at which speed or direction changes

Which of these is an example of acceleration?

• A car coasts along at 40 km/h

• A car speeds up from 40 km/h to 80 km/h

• A car is parked on the side of the road

When an object slows down it is called _______.

• Natural acceleration

• Unacceleration

• Negative acceleration

Which of the following is a speed?

• 80 km/h

• 8 hours

• 3000 km

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s
• 1000 m/s
• 100 seconds
• 10 seconds

The turtle speeds up from 0m/s to 20m/s in 2 seconds. What is its acceleration?

• 40m/s^2

• 20m/s²

• 10m/s²

• 2m/s²

A ball of clay is thrown at a wall with an initial velocity of 28.0 m/s.  After it hits the wall, it takes 0.020 s to stop.  What is the acceleration of the clay when it hits the wall?

• 1400 m/s²
• -1400 m/s₂
• 0.56 m/s²
• -0.56 m/s²

A car starts from rest (0 m/s) at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.

• 2.2m/s²
• 7.0m/s²
• 5.7m/s²
• 70m/s²

A drag racer accelerated from rest ( 0 m/s ) to 195 m/s in 6.5 s.  What was the acceleration?

• 10 m/s
• 30 m/s²
• -3 m/s²
• 26 m/s