Motion Quiz 1

A car travels 90 meters due north in 15 seconds. Then the car turns around and travels 40 meters due south.  What is the magnitude and direction  of the car's resultant displacement?  

• 40 metres, South
• 50 metres, South
• 50 metres, North
• 40 metres, North 

A student places a toy car on a track with a rough surface.

In which situation is a net force of zero acting on the toy car?

• The car is pushed around a curved section of track so that it maintains the same speed.

• The car is pushed along a straight section of track so that it maintains the same speed.

• The car is given a quick push along any section of track and then allowed to come to a stop.

• The car is pulled along any section of track so that its speed increases by the same amount each second.

Jerry walked from home to school, then from the school to the park. What is his total distance?

• 2 km

• 5 km

• 8 km

• 10 km

What describes a vector best?

• Magnitude

• Magnitude and unit

• Magnitude, unit, and direction

• Direction

Reference point can also be described as what?

• An ending point

• A starting point

• A description

• A location

When an object’s distance from another object is changing,

• it is in motion.

• it is speeding.

• it has a high velocity.

• it is accelerating.

David walks 3 km north, and then turns east and walks 4 km. What is the distance?

• 7 km

• 3 km

• 4 km

• 1 km

In order to determine an object’s location, you need a _____.

• time

• displacement

• speed

• reference point

Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?

• 0 meters
• 400 meters
• 800 meters
• 1600 meters

The position of a runner in a race changes as time passes. What could a reference point to describe the change in position? 

• the starting line
• the runner’s speed
• the runner’s right foot
• another runner