Speed

Question 1

Distance

Answer 1

the length of the space between two points.

Question 2

Speed

Answer 2

the rate at which someone or something moves or operates or is able to move or operate.

Question 3

Time

Answer 3

the indefinite continued progress of existence and events in the past, present, and future regarded as a whole.

Question 4

Scalar

Answer 4

having only magnitude, not direction.

Question 5

Vector

Answer 5

a quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.

Question 6

Displacement

Answer 6

the action of moving something from its place or position.

Question 7

Velocity

Answer 7

the speed of something in a given direction.

Question 8

Distance- time graph

Answer 8

‘Distance’ is the total length travelled by an object. The standard unit is the ‘metre’. A distance-time graph shows how far an object has travelled in a given time. Distance is plotted on the Y-axis (left) and Time is plotted on the X-axis (bottom).

Question 9

Acceleration

Answer 9

• the change in velocity per second is known as the acceleration of a body.
• acceleration is measured in metre per second per second or metre per second squared (m/s/s)
• can be written as ms-2 or m/s2

Question 10

Force

Answer 10

Forces explain why an object moves the way itdoes. Why things stretch, twist, tear etc.

Question 11

Non contact forces

Answer 11

Forces where objects do not have to be in contact for the force to occur

Question 12

Contact forces

Answer 12

Two objects have to be in contact for these forces to occur.

Question 13

Interaction pair

Answer 13

Pairs of forces that occur together.

Question 14

Newton meter

Answer 14

A device used to measure forces. Also known as a spring balance.

Question 15

Force meter

Answer 15

Used to measure forces digitally.

Question 16

Balanced

Answer 16

When an object does not move because competing forces cancel each other out, we say the forces are balanced.

Question 17

Equilibrium

Answer 17

An object is in equilibrium when it is subject to balanced forces.

Question 18

Unbalanced

Answer 18

When one force on an object is stronger than another force, the forces are unbalanced. Unbalanced forces cause objects to speed up, slow down or change direction.

Question 19

Dynamic equilibrium

Answer 19

When an object has balanced forces acting upon it when it is moving.

Question 20

Friction

Answer 20

A force that opposes motion when two objects are placed in contact.

Question 21

Drag forces

Answer 21

Forms of friction, such as water resistance and air resistance.