Chapter one review by Richard Spangler https://padlet.com/spanglerr_21/2kmzc8zh3lut sections 1-4 en-us 2016-10-05 12:39:34 UTC 2025-10-20 11:37:27 UTC hello@padlet.com defnitions spanglerr_21 https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/128464166 Friction: A force that opposes motion between two surfaces that are in contact.

Force: strength or energy as an attribute of physical action or movement.

Motion: When an object changes position over time relative to a reference point ]]> 2016-10-05 12:55:54 UTC https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/128464166 average speed equation spanglerr_21 https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129490580 average speed = total distance/ total time.]]> 2016-10-10 12:42:09 UTC https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129490580 More definitions: spanglerr_21 https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129491213 Velocity: The speed of an object in a particular direction.

Acceleration: the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change.

Newton: the SI unit for force.

Net force: The combination of all of the forces acting on an object.]]> 2016-10-10 12:44:14 UTC https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129491213 The forces that act on an object ing motion spanglerr_21 https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129769322 2016-10-11 12:33:30 UTC https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129769322 Gravity spanglerr_21 https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129771612 The first person to come up with one of the first theories of gravity was a British scientist named Sir Isaac Newton.]]> 2016-10-11 12:40:09 UTC https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129771612 spanglerr_21 https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129772836 Gravity: a force of attraction between two objects that is due to their masses.]]> 2016-10-11 12:43:26 UTC https://padlet.com/spanglerr_21/2kmzc8zh3lut/wish/129772836