definitions

Question 1

definition of acceleration?

Answer 1

how quickly an object increases in speed in a certain direction

Question 2

equation for acceleration?

Answer 2

change in velocity / time taken
–also known as
(v-u) / t x a

Question 3

definition of energy?

Answer 3

a property that cannot be created nor destroyed, only transferred

Question 4

how to find the efficiency of energy output?

Answer 4

total output - output lost (as a percentage)

Question 5

define momentum

Answer 5

the product of mass and velocity

Question 6

equation for momentum?

Answer 6

mass x velocity

Question 7

define force?

Answer 7

a push or pull that acts on an object that causes a change in velocity