Calculate the speed of the entire trip.

• 0.9 m/s

• 0.3 m/s

• 2 m/s

• -1 m/s

Calculate acceleration of line C.

• 5 m/s2

• 2.5 m/s2

• 6.7 m/s2

• 6.25 m/s2

A car has an initial velocity of 28 m/s. After 4 seconds, it has a velocity of 16 m/s. Calculate the acceleration of the car.

• -8 m/s2

• 12 m/s2

• 1.5 m/s2

• -3 m/s2

What type of motion does the object have between times 90 to 100 seconds?

• positive acceleration

• negative acceleration

• constant fast velocity

• fast negative velocity

A person walks from A to B following the blue route.

The blue line segments between A and B represent ____ .

• the distance the person walked

• the person's displacement

• the speed at which the person walked

• the velocity at which the person walked

A person walks from A to B following the blue route.

The red line between A and B represents ____ .

• the distance the person walked

• the person's displacement

• the speed at which the person walked

• the velocity at which the person walked

If a person ran 1 lap on this 400 m track, the distance she/he would run would be ____.

• 400 meters

• 400 yards

• 0 meters

• 0 yards

If a person ran 1 lap on this 400 m track, her/his displacement would be ____.

• 400 meters

• 400 yards

• 0 meters

• 0 yards

Usain Bolt ran 100 meters in 9.58 seconds in 2009 in the World Championships. What was his approximate average speed in this race?

• 10.4 m/s

• 0.096 m/s

• 15.6 m/s

• 8.7 m/s

Answer explanation

Use speed equation:

s = distance / time

The Sky Screamer at Six Flags swings riders at a constant speed- not speeding up or slowing down. Yet the riders are still being accelerated because they ____.

• feel the wind blowing on them

• are going in a circle and are constantly changing direction

• are screaming and that makes them feel like they are speeding up

• all the swings are evenly spaced out