Physics

Question 1

acceleration

Answer 1

rate at which velocity changes over time

Question 2

Newton’s first, second, and third law

Answer 2

an object will remain at rest or at constant speed unless acted upon by an unbalanced force, F=ma, for every force there is an equal an opposite force

Question 3

Inertia, mass, weight

Answer 3

a property that causes matter to resist changes in velocity, the amount of physical matter in a body, the force acting on objects due to gravity

Question 4

net force, unbalanced forces, gravity, friction

Answer 4

the vector sum of forces acting on a body, a force that causes all things with mass or energy to be attracted to each other, resistance that occurs when two surfaces rub on each other

Question 5

potential energy, kinetic energy with formulas

Answer 5

the energy possessed by an object because of its position relative to other objects, motion energy formulas: PE = mgh, KE = 1/2mv^2

Question 6

9 types of energy

Answer 6

mechanical, thermal, nuclear, chemical, elastic, electromagnetic, gravitational, kinetic, sound

Question 7

machine and types (6)

Answer 7

an object that receives an input amount of work and transfers the energy to an output amount of work. Types: inclined plane, wedge, pulley, lever, screw, wheel and axel