Displacement

A racecar speeds up from 0 m/s to 30 m/s with a 45 m displacement. What is the vehicle's acceleration?

• 2 m/s²
• 5 m/s²
• 10 m/s²
• 15 m/s²

Which of the following is a value for the acceleration of objects in free fall?

• 4.905 m/s²
• -4.905 m/s²
• 9.81 m/s²
• -9.81 m/s²

Which of the following units are used to measure free fall acceleration?

• m/s
• m/s²
• m*s
• m²/s²

What is the displacement of an object at rest?

• 0 m
• 1 m
• 9.8 m
• 9.81 m

In addition to displacement, which of the following must be used for a more complete description of an object's motion?

• Meters
• Kilograms
• Time
• Distance

A dolphin can swim 1.85 km/h. How far does the dolphin travel after 0.6 hours?

• 0.63 km
• 1.1 km
• 2.5 km
• 3.7 km

What is acceleration?

• It is the displacement.
• It is the velocity.
• It is the rate of change of the displacement.
• It is the rate of change of the velocity.

Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's distance?

• 0 meters
• 400 meters
• 800 meters
• 1600 meters