Kinetic Energy
How can you find the speed of an object when you have its KE and mass?
s=sqrt (2*KE)/m
If a balloon is 6m above the ground, its gravity is 9.8m/s^2, and its mass is 5 kg, what is its GPE?
294j
What is the formula for EPE?
1/2*kx^2. X is the displacement, and k is the stiffness.
If the mass increases but the speed is constant, what happens to the KE?
It increases.
The equation mgh is the formula use to solve GPE. What is g?
The strength of gravity
What happens to a spring’s EPE when it’s being compressed?
It increases.
If the speed of a car is 20, and it’s mass is 2000 kg, what is it’s KE?
400000j
What are the 2 main factors for GPE?
Mass and height
Give 3 examples of objects with EPE
Ex: eraser, rubber band, spring