Force & Motion
A change in an object's position compared to objects around it...
Motion
A tool that makes work easier...
Simple Machine
The force that makes everything fall down, towards the Earth
Gravity
The measure of the distance an object travels in a certain amount of time...
Speed
A baseball player hits a baseball with a bat. The ball travels very high and over the fence before falling to the ground, explain what happened to the ball...
Gravitational force pulls the ball back to the ground
Pushes or pulls that cause objects to change their motion...
Force
A simple machine used to make work easier by increasing the distance over which a force is used...
How much gravity an object has depends on how much _____ it has...
Mass
An object's location or place
Position
The moon has less gravity than Earth, what kind of movement can an astronaut expect to have there, compared to Earth?
An astronaut will be able to jump higher on the moon
Forces that are not equal, causing a change in motion...
Unbalanced forces
What two simple machines both have an inclined plane in their make up?
A screw (An inclined plane wrapped around a post)
The sun's gravity keeps the Earth in what?
Orbit
What tells you which way an object is moving?
What simple machine could be used to hold two objects together?
Screw
A measure of speed in a certain direction....
Velocity
The fixed point on a lever is known as the....
Fulcrum
Who created the the Law of Universal Gravitation?
Isaac Newton
The rate of change of velocity of an object
How do simple machines affect work?
They change the direction or the amount of force needed for work
When an object remains still, meaning the sum of the forces is zero the object is in...
Equilibrium
A simple machine that can either increase the force that is used on them OR change the direction of the force...
Pulley
What is the standard acceleration of gravity?
9.807 meters per second squared (m/s2)
The overall force acting on an object when all the individual forces are combined...
Net Force
What type of simple machine are a pair of scissors?
They're not, they're a compound machine. (Two levers, and two wedges)