Review Equations that is on the test
Force X Distance is the equation for what
Work
Unit used for Force
Newton
Did Newton discover gravity?
No - Early Earth dwellers- tripping, throwing things etc
Equation to find the distance of a free falling object
D=1/2gt2
Equation for Speed
Distance/ Time
Power- How fast work is done
Who came up with the 3 laws of motion
Isaac Newton
The is the Universal Gravitation Constant
6.67 x 10-11 or 0.0000000000667
a collapse star is know as what?
a black hole
2 types of Mechanical Energy
Potential and Kinetic
Equation for acceleration (car speeding up)
End speed- start speed/ time
Number used for gravity on Earth
10 m/s2
f= G M1x M2/ d2
Sideways motion that the moon moves around the Earth- Parallel to Earth
Tangential Velocity
The Equation to find Gravitation Potential Energy
Weight X Height or Mass x Gravity x Height
Momentum
Car speeds up from 30 m/s to 60 m/s in 2 s. What is the acceleration rate?
60-30= 30/2sec = 15 m/s2
How does the force of gravity between objects depend on masses?
Proportional - Mass goes up Force goes up
spring tide- earth, moon and sun are aligned
neap tide - sun is perpendicular to earth and moon
What angle would you throw a football to get the longest range?
45 Degrees
How do you calculate average speed
Total Distance Covered / Total time it took
What does F , M and d stand for
F= force M= Mass d= distance
If the distance of the object tripled the the force of gravity would change by what?
Inverse square law 3= (1/3)2= 1/9
Equation for Universal Gravitation
D=1/2 gt2 is the equation to find what?
Distance of a free falling object