Patterns & Relationships

Question 1

Speed

Answer 1

The distance travelled per unit time is known as the speed.

Question 2

Velocity

Answer 2

Velocity of an object is the distance it travels per unit time, in given direction.

Question 3

Acceleration

Answer 3

This change in velocity per second is known as the acceleration of a body. (ms-2 or m/s2)

Question 4

Stationary

Answer 4

On a distance-time graph, time is increasing to the right, but its distance does not change. It is stationary.

Question 5

Force

Answer 5

Forces are what makes things move, like a push or a pull.

Question 6

Non-Contact Forces

Answer 6

Gravity
Magnetic Force
Electrical Force

Question 7

Contact Forces

Answer 7

Friction
Tension (Pull)
Air Resistance
Applied Force (Push)
Spring Force (Twist)

Question 8

Friction

Answer 8

Friction is the force that resists things rubbing against each other.
It helps you to walk without sliding.
Example: when you walk on ice, there is no friction.

Question 9

Air Resistance

Answer 9

Air resistance is the force that slows things down when they are moving.
It pushes against a moving car or against the body of a person falling from the sky.

Question 10

Buoyancy

Answer 10

Buoyancy is the force that pushes things up in water.
Buoyancy helps boats and swimmers and keep them on top of the water so they don’t sink.

Question 11

Mass

Answer 11

The mass of an object is the amount of matter that is in the object.

Question 12

Weight

Answer 12

The weight of an object is the force of gravity that acts on that object.