Force and Motion

A car travels 20 meters east in 1.0 seconds. The displacement of the car at the end of this 1.0 second interval is

• 20 m
• 20 m/s
• 20 m east
• 20 m/s east

Base your answer(s) to the following question(s) on the graph, which represents the relationship between the displacement of an objecct and its time of travel along a straight line.

• 2
• 3

What is the average velocity of a car that travels 30 kilometers due west in .50 hour?

• 15 km/hr
• 60 km/hr
• 15 km/hr west
• 60 km/hr west

If the sum of all the forces acting on a moving object is zero, the object will

• Slow down and stop
• Change the direction of its motion
• accelerate uniformly
• Continue moving with constant velocity

A car travels 300 meters in 15 seconds. What is the average velocity of the car?

• 20 m/sec
• 5.0 m/sec
• 15 m/sec
• 30 m/sec

A car accelerates uniformly from rest to a speed of 10 meters per second in 2 seconds. The acceleration of the car is

• 0.2 m/sec²
• 10 m/sec²
• 20 m/sec²
• 5 m/sec²