Chapter 8 - 10

Question 1

Vector

Answer 1

A quantity that has both size and direction.

Question 2

Scalar

Answer 2

A quantity that has size only.

Question 3

Weight

Answer 3

The force of gravity acting on an object.

Question 4

Mass

Answer 4

The amount of matter an object is made of.

Question 5

Work done

Answer 5

The amount of energy transferred.

Question 6

Elastic deformation

Answer 6

When an object can return to its original shape after being stretched or compressed.

Question 7

Limit of proportionality

Answer 7

The point at which the extension of a spring stops increasing in proportion with force.

Question 8

Distance (scalar)

Answer 8

How much ground an object has covered during its motion (scalar).

Question 9

Displacement (vector)

Answer 9

How far an object is from its starting position (vector).

Question 10

Acceleration

Answer 10

The rate of change of velocity.

Question 11

Terminal velocity

Answer 11

The maximum speed an object can fall at (when air resistance balanced with weight).

Question 12

Thinking distance

Answer 12

Distance travelled while reacting to a hazard.

Question 13

Braking distance

Answer 13

Distance travelled between applying the break and stopping.

Question 14

Stopping distance

Answer 14

The combined thinking and braking distance.

Question 15

Spring constant

Answer 15

A number that indicates the stiffness of a spring (bigger number = stiffer spring).

Question 16

FORCE applied to spring ( F = K E )

Answer 16

FORCE = Spring constant x Extension

Question 17

DISTANCE travelled ( S = V T )

Answer 17

Distance travelled = Speed x Time

Question 18

WEIGHT ( W = M G )

Answer 18

Weight = Mass x Gravitational field strength (g)

Question 19

RESULTANT FORCE ( F = M A )

Answer 19

Resultant force = Mass x Accelleration

Question 20

WORK DONE ( W = F S )

Answer 20

Work done = Force x Distance moved

Question 21

ACCELERATION

Answer 21

Acceleration = change in velocity ÷ time taken