Physical Science Chapter 11: Motion Practice Questions

A passenger in the rear seat of a car moving at a steady speed is at rest relative to:

• the side of the road.

• a pedestrian on the corner ahead.

• the front seat of the car.

• the wheels of the car.

Which distance can be most accurately measured with a ruler?

• the length of a river

• the width of a book

• the distance between two cities

• the size of an object under a microscope

A person drives north 3 blocks, then turns east and drives 3 blocks. The driver then turns south and drives 3 blocks. How could the driver have made the distance shorter while maintaining the same displacement?

• by driving east 3 blocks from the starting point

• by driving north 1 block and east 4 blocks

• by driving west 3 blocks from the starting point

• by driving back to the starting point by the same route

Displacement vectors of 1 km south, 3 km north, 6 km south, and 2 km north combine to a total displacement of ____.

• 12 km

• 6 km

• 4 km

• 2 km

Speed is the ratio of the distance an object moves to ____.

• the amount of time needed to travel the distance.

• the direction the object moves.

• the displacement of the object.

• the motion of the object.

A car traveled 88 km in 1 hour, 90 km in the next 2 hours, and then 76 km in 1 hour before reaching its destination. What was the car’s average speed?

• 254 km/h

• 63.5 km/h

• 209 km/h

• 74.5 km/h

A horizontal line on a distance-time graph means the object is ____.

• moving at a constant speed.

• moving faster.

• slowing down.

• at rest.

A distance-time graph indicates that an object moves 100 m in 4 s and then remains at rest for 1 s. What is the average speed of the object?

• 50 m/s

• 25 m/s

• 20 m/s

• 100 m/s

Vector addition is used when motion involves ____.

• more than one direction.

• more than one velocity.

• more than one speed.

• all of the above

Which of the following are examples of quantities that have both magnitude and direction?

• Speed

• Displacement

• Time

• Mass