Physics 1 - Chapter 11 Test

Examine Figure 11-1. If you were standing under the tree, which object would appear to be moving?

• the tree

• the airplane

• the boy

• the building

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

One kilometer equals 1000 meters. What does the prefix kilo- mean?

• 1

• 10

• 100

• 1000

A person walks 1 mile every day for exercise, leaving her front porch at 9:00 am. and returning to her front porch at 9:25 am. What is the total displacement of her daily walk?

• 1 mile

• 0

• 25 minutes

• none of the above

A person drives north 6 blocks, then turns west, and drives 6 blocks. The driver then turns south and drives 6 blocks. How could the driver have made the distance shorter while maintaining the same displacement?

• by driving west 6 blocks from the starting point

• by driving north 4 block and west 7 blocks

• by driving south 6 blocks from the starting point

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

A ball is rolled uphill a distance of 5 meters before it slows, stops, and begins to roll back. The ball rolls downhill 9 meters before coming to rest against a tree. What is the magnitude of the ball's displacement?

• 4 meters

• 9 meters

• 14 meters

• 45 meters

Displacement vectors of 4 km south, 2 km north, 5 km south, and 5 km north combine to a total displacement of

• 16 km north

• 11 km west

• 6 km south

• 2 km south

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.

Tags

NGSS.MS-PS3-1

Instantaneous speed is measured

• at the starting point.

• when the object reaches its destination.

• at a particular instant.

• over the duration of the trip.