PHYSICS DIAGNOSTIC TEST

How will you describe motion of an object if its position does not change at a given time interval?

• A. It is at rest.

• B. Its speed is constant.

• C. Its velocity increases.

• D. It is accelerating.

If an object covers equal distance at equal intervals of time, then what can you say of its motion?

• A. It is at rest.

• B. It is accelerating.

• C. It changes direction.

• D. It is moving at constant speed.

Toshi (a Shih Tzu dog) ran 4m to the east, then 2m to the south, and another 4m to the west. What is the total distance travelled by Toshi ?

• A. 2m

• B. 4m

• C. 8m

• D. 10m

What is the dog’s displacement? The dog has travelled

• A. 2 meters to the north.

• B. 2 meters to the south.

• C. 10 meters to the north.

• D. 10 meters to the south.

Velocity refers to the speed and direction of motion of an object. Velocity changes when

• A. the direction of motion changes.

• B. the speed increases or decreases.

• C. both speed and direction change.

• D. any of these change.

Which of the following motion descriptors is a scalar quantity?

• A. Speed

• B. Velocity

• C. Displacement

• D. Acceleration

Which of the following instruments measures the distance traveled by a vehicle?

• A. Odometer

• B. Manometer

• C. Speedometer

• D. Anemometer

The shorter the wavelength of a wave,

• A. the lower its speed.

• B. the greater its amplitude.

• C. the longer its period.

• D. the higher its frequency.

Where does sound propagate? In a

• A. Medium

• B. Vacuum

• C. Empty space

• D. Outer space

Which of the following would most likely transmit sound best?

• A. Vacuum

• B. Metal rod

• C. Water in the sea

• D. Air in the mountain