Physics, energy forces, work done

Question 1

8 energy stores

Answer 1

thermal
electrostatic
gravitational potential
elastic potential
magnetic
atomic
chemical
kinetic

Question 2

4 energy transfers

Answer 2

heating
electrical
radiation
mechanical

Question 3

dissipation

Answer 3

energy, often thermal, thats wasted to the surroundings

Question 4

kinetic energy formula

Answer 4

0.5 times mass times velocity squared

Question 5

GPE formula

Answer 5

mass times graviational field strength times change in height

Question 6

efficiency formula

Answer 6

useful energy output/ useful energy input

Question 7

mechanical power formula

Answer 7

work done/ time

Question 8

electrical power formula

Answer 8

current times voltage

Question 9

work done formula

Answer 9

force times distance moved

Question 10

power formula

Answer 10

work done/ time

Question 11

state the effect on a moving object if all forces are balanced

Answer 11

remains moving at a constant speed

Question 12

the effect on an object if the applied forces are unbalanced

Answer 12

will change velocitys, speed up or down based off the forces

Question 13

scalar quanitity

Answer 13

only magnitude

Question 14

vector quanitity

Answer 14

magnitude and direction

Question 15

newtons 2nd law

Answer 15

force = mass times acceleration F=M x A

Question 16

newtons 3rd law

Answer 16

when objects interact, every action has an equal and opposite force (reactant force)

Question 17

how to find the distance travelled using a velocity time graph

Answer 17

area between the graph line and X axis

Question 18

elastic and non elastic distortion

Answer 18

elastic material can return back to original shape, inelastic will keep their new shape

Question 19

force on a spring

Answer 19

spring constant times extension

Question 20

acceleration formula

Answer 20

final velocity- initial velocity
/time taken to change