Topic 2

Question 1

Terminal Velocity

Answer 1

Objects falling through fluid reach terminal velocity = resultant force acting on it is 0 and moving at constant pace

Question 2

Define Proportional

Answer 2

Directly linked

Question 3

Inversely Propportional

Answer 3

Opposite = negative gradient

Question 4

Force=

Answer 4

Mass x Acceleration

Question 5

Define Inertia

Answer 5

Remaining unchanged

Question 6

Define Inertial Mass

Answer 6

A measure of how difficult it is to change the velocity of an object

Question 7

For every action there is an…

Answer 7

Equal and opposite reaction

Question 8

Momentum

Answer 8

Measure of how much motion an object has

All moving objects have momentum

Question 9

Momentum (p)=

Answer 9

Mass x Velocity

P=MxV

Question 10

Conservation of Momentum

In a collision or explosion, momentum is conserved.

Momentum before =

Answer 10

Momentum after

Question 11

Total Stopping distance=

Answer 11

Thinking distance + braking distance

Question 12

Braking distance =

Answer 12

Stopping distance - thinking distance

Question 13

Faster speed =

Answer 13

bigger stopping distance

Question 14

Define Force

Answer 14

Rate of change on momentum

Question 15

Force (f) =

Answer 15

MxV - MxU
—————
t

Question 16

If forces act opposite, you…

Answer 16

Subtract them

Question 17

If forces act the same, you…

Answer 17

Add them

Question 18

Newton’s First Law

Answer 18

Law of Inertia
When an object stays at rest as it is in motion
(stays in one spot whilst in motion)

Question 19

What is the Law of the Conservation of Energy?

Answer 19

Energy cannot be created or destroyed - it can only b transferred from stores

Question 20

Energy Stores

Answer 20

Thermal Energy
Nuclear Energy
Kinetic Energy
Elastic Potential Energy
Gravitational Energy
Chemical Energy

Question 21

Energy Transfers

Answer 21

By heating
By electricity
By forces
By sound 
By light

Question 22

Equation for Energy Efficiency

Answer 22

Useful Output Energy
—————————-
Total Input Energy

Question 23

Equation for Power

Answer 23

Energy
———-
Time

Question 24

GPE

Answer 24

Gravitational Potential Energy

Question 25

GPE=

Answer 25

mxgxh

Mass x gravitational field strength x vertical height

Question 26

Kinetic Energy (Joules) =

Answer 26

1/2 x mass x velocity2

1/2 x kg x m/s

Question 27

GPE = KE

Answer 27

Equal