Science 7

What defines motion?

• Change in speed

• Change in position of an object relative to a reference point

• Change in direction

• Change in acceleration

How do we distinguish between distance and displacement?

• Distance is a vector quantity while displacement is a scalar quantity

• Distance is the shortest path between two points while displacement is the length along a path between two points

• Distance is the length along a path between two points while displacement is the shortest path between two points

• There is no difference between distance and displacement

What is the displacement of an object that moves 10 meters north and then 10 meters south?

• 20 meters

• 10 meters

• 0 meters

• 5 meters

Interpreting an object's velocity of 10 m/s north:

• The object is moving 10 meters every second without a specific direction

• The object is moving 10 meters every second towards the north

• The object is moving 10 meters towards the north every second

• The object is moving towards the north without a specific speed

When an object's speed is constant, what can be inferred about its acceleration?

• The acceleration is increasing

• The acceleration is decreasing

• The acceleration is zero

• The acceleration is constant but not zero

How would you represent the motion of an object in uniform motion on a distance-time graph?

• A straight line slanting to the right

• A straight line slanting to the left

• A parabola opening upwards

• A parabola opening downwards

Defining a scalar quantity:

• A quantity described by magnitude and direction

• A quantity described by magnitude only

• A quantity described by direction only

• A quantity described by neither magnitude nor direction

What characteristic makes velocity a vector quantity?

• It is described by magnitude only

• It is described by direction only

• It is described by both magnitude and direction

• It is described by neither magnitude nor direction

Calculating the velocity of an object moving 5 meters east in 2 seconds:

• 2.5 m/s

• 2.5 m/s east

• 10 m/s

• 10 m/s east

Analyzing the motion represented by a straight line slanting to the right on a distance-time graph:

• The object is at rest

• The object is moving with a uniform velocity

• The object is moving with a uniform acceleration

• The object is moving with a non-uniform acceleration