2.2.3

Question 1

what is newtons first law also called ?

Answer 1

law of inertia.

Question 2

whats the equation for force ?

Answer 2

mass x acceleration

Question 3

whats newtons second law ?

Answer 3

the greater the force that acts on the object, the more it accelerates

Question 4

whats newtons third law ?

Answer 4

every action has an equal and opposite reaction

Question 5

whats mass ?

Answer 5

the amount of matter in a body

Question 6

whats weight ?

Answer 6

the gravitational force of attraction between the mass of earth and the mass of a body

Question 7

what happens to the weight of a body as it moves further from the earths centre ?

Answer 7

it decreases

Question 8

whats the gravitational acceleration at sea level ?

Answer 8

9.8 m/s

Question 9

whats the calculation for weight ?

Answer 9

mass x gravitational acceleration

Question 10

what causes a body to resist any change of motion ?

Answer 10

inertia

Question 11

whats potential energy ?

Answer 11

the energy a body has due to its position or condition.

Question 12

whats kinetic energy ?

Answer 12

the energy a body has due to its motion.

Question 13

whats total energy ?

Answer 13

sum of all different forms of energy in a system.

Question 14

can energy be created or destroyed ?

Answer 14

no, it can only be converted from one form to another.

Question 15

what is stored in chemical bonds ?

Answer 15

chemical energy

Question 16

whats generated when converting one energy to another ?

Answer 16

heat

Question 17

what two variables does the momentum of a object depend on?

Answer 17

its mass and velocity