Motion

Velocity is a measure of________.

• change in position during a change in time

• the slope of a position time-graph

• displacement during an interval of time

• All of the above

The following variables are considered vector EXCEPT:

• Speed

• Acceleration

• Velocity

• Displacement

If the velocity versus time graph of an object is a horizontal line, the object is________.

• moving with zero acceleration

• moving with constant non-zero acceleration

• at rest

• moving with increasing speed

You hear that a storm is moving 15 km/h north. You have been given the storm’s__________.

• Constant speed

• Acceleration

• Velocity

• Average speed

A car traveled at 88 km/h for 5 hours. How far did it travel?

• 200 km

• 440 km

• 19,600 m

• 88,000 m

Which of the following situations is related to the Law of Interaction?

• Use of seatbelts in a car

• If pulled quickly, the tablecloth can be removed from underneath of dishes

• An apple is falling down

• A nail hit by a hammer

Which of the following happens when a driver steps on the accelerator of a car?

• The car speeds up

• The car decelerates

• The car changes direction

• No fuel is consumed

If it takes you half an hour to go 1 km across town, then what is your average speed?

• 0.5 km/h

• 2 km/h

• 2 m/s

• 3 m/s

A train travels south at 85 km/h for 5 hours. The train turns to the west and travels 100 km/h for the next hour. What is the train’s velocity during that hour?

• 100 km/h west

• 15 km/h southwest

• 185 km/h

• 85 km/h

Which of the following Newton’s Laws of motion is the law of inertia?

• In the absence of air resistance, all objects fall with the same acceleration.

• An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.

• Acceleration is directly proportional to the net force applied, and inversely proportional to the mass of the object.

• Every action has an equal and opposite reaction.