P8 Forces In Balance

Question 1

Displacement

Answer 1

Distance without a change in
direction

Question 2

Vector

Answer 2

Physical quantity with size and direction

Question 3

Scalar

Answer 3

Physical quantities with size and no direction

Question 4

Scalar examples

Answer 4

Distance
Speed
Mass
Energy
Volume
Density
Power
Time

Question 5

Vector examples

Answer 5

Displacement

Velocity

Weight

Acceleration

Force

Question 6

Velocity

Answer 6

Speed in a given direcrion

Question 7

Force

Answer 7

A push or a pull that acts on an object due to the interaction with another object

Question 8

Reaction force

Answer 8

A force due to contract between 2 objects

Question 9

Electrostatic force

Answer 9

Force between 2 charged objects

Question 10

Contact force examples

Answer 10

Friction

Air resistance

Tension

Reaction force

Question 11

Non-contact force examples

Answer 11

Gravitational

Electrostatic

Magnetic

Question 12

Magnitude of force measured in

Answer 12

Newtons

Question 13

Centre of mass

Answer 13

The point where the weight of an object acts

Question 14

Balanced force

Answer 14

Forces that combine in a way they cancel each other out

Question 15

Unbalanced force

Answer 15

Forces that combine in a way they do not cancel each other completely out

Question 16

Examples of balanced forces

Answer 16

Resting against a wall

Floating in water

Tug of war

Question 17

Examples of unbalanced forces

Answer 17

Object sinking in water

Fruit dropping from tree

Riding skateboard

Question 18

Upthrust

Answer 18

An object that makes objects move up in water

Question 19

Friction

Answer 19

The force that arises when 2 surfaces are in contact with each other

Question 20

Is there a resultant force in balanced objects

Answer 20

No

Question 21

Moment

Answer 21

Turning force around a fixed pivot

Question 22

Ways to increase momentum

Answer 22

Increase distance from the pivot

Increase force applied

Question 23

Moment

Answer 23

Force x distance

Question 24

Lever

Answer 24

Rigid body capable of lifting a heavy load with small effort

Question 25

Gear ratio

Answer 25

Number of teeth on the driven _________________________________ Number of teeth on the driver

Question 26

Newton's third law of motion

Answer 26

When 2 objects interact with each other they exert equal and opposite forces on each other

Question 27

Key conditions for object in equilibrium

Answer 27

Resultant force on object is 0 Forces acting on object have no overall turning effect