Chapter 9 - Motion

Question 1

Acceleration

Answer 1

The rate of change in velocity (m/s²)

Question 2

Deceleration

Answer 2

The rate of change of velocity when an object slows down.

Question 3

Displacement

Answer 3

Distance in a given direction.

Question 4

Gradient

Answer 4

Change of the quantity plotted on the y-axis divided by the change of the quantity plotted on the x-axis.

Question 5

Tangent

Answer 5

A straight line is drawn to touch a point on a curve so it has the same gradient as the curve at that point

Question 6

Velocity

Answer 6

Speed in a given direction (m/s)

Question 7

Distance-time graph

Answer 7

The gradient of this kind of graph represents the speed of an object.

Question 8

Vector

Answer 8

A physical quantity that jas magnitude and direction.

Question 9

Scalar

Answer 9

A physical quantity that has magnitude, no direction.

Question 10

Velocity-time graph

Answer 10

The gradient of this kind of graph represents the acceleration of an object. The area under the line represents the distance travelled.