Equations
This is the equation for force
Force = mass x gravity
This machine is designed to provide a mechanical advantage to either push or pull items to a higher location. An example would be a hammer pulling out a nail.
Lever
What is the constant of gravity
9.8m/s^2
Force: How much force (in newtons) is needed to move a 4kg ball
39.2N
What is potential energy
Stored energy or energy that an object can have
This is the equation for speed
Speed = Distance/Time
For a lever this is the area where the lever pivots.
Fulcrum
What is a Newton
A unit of force used to measure how much energy is needed to move an object
Speed: What is the speed of a car if it travels 240 miles in 4.14 hours (round to two decimal places)
57.97mph
What is kinetic energy
Energy of an object in motion
This is the Equation for distance
Distance= Speed x Time
This simple machine is used to compare the weights of multiple objects.
Balance Scale
What is friction
Resistance of one object as it moves against another
What is the distance traveled if a car went 35mph for 6.4 hours
224 miles
What is thermal energy
Energy inside of a system that generates heat
This is the equation for Time
Time = Distance/Speed
This simple machine helps the movement of heavy objects. These objects can vary greatly in their size, thickness, and even materials they are made of. In modern times most are made of rubber.
Wheels.
What is the range of values used to measure friction (friction coefficient)
any number between 0-1
Time: How much time did it take to travel to Ohio if you drove 285 miles at a speed of 71.2 mph
4.00 hours
What is conduction
This is the equation for friction
Friction = N/(mass x gravity)
This simple machine can utilize ropes or chains to help lift heavy objects up to tall heights. The more of these used can result in an object feeling lighter than it is.
Pulley
What is convection
The movement and mixture of hot and cold liquids
What is the friction between two items when the Newtons needed to move the object is 4.88N and the item weighs 830g
0.59
Which item has more compact molecules, a hot cup of coffee, or a cold glass of soda
Warm cup of coffee