2.1 Motion

Question 1

Acceleration

Answer 1

The change in velocity/change in time, measured in m/s power of 2

Question 2

Average speed

Answer 2

Total distance/total time, usually measured in m/s

Question 3

Displacement

Answer 3

The distance from a point in a particular direction

Question 4

Gradient

Answer 4

The degree of steepness of a graph at any point. Aldo called slope

Question 5

Kinetic energy

Answer 5

The energy associated with a kinetic store

Question 6

Kinetic store

Answer 6

Energy in a kinetic store is associated with a moving object, calculated with E=1/2 mv power of 2

Question 7

Scalar

Answer 7

A quantity that has magnitude(size) but no direction

Question 8

Slope

Answer 8

Slope measures the steepness of a line on a graph. Also called gradient

Question 9

Ultrasound

Answer 9

Sound with a frequency higher than the human hearing (about 20kHz), used in medicine, and for finding distances

Question 10

Vector

Answer 10

A quantity that has direction as well as a magnitude (size)

Question 11

Velocity

Answer 11

The speed in a particular direction, a vector