potential energy
T/F: The more mass an object has, the less PE it has.
FALSE
Does a car battery store kinetic energy?
No
Potential or kinetic: A parachutist about to jump.
potential energy
the more _______ something has the more kinetic energy it has
What is mass/velocity?
What is the formula for PE?
PE=mgh
The higher up an object is, the higher its _________.
POTENTIAL ENERGY
T/F: A ball rolling down the hill has KE.
True
Potential or kinetic: A person walking along a road
kinetic energy
energy is measured in
What is joules
What is the formula for KE?
KE=(1/2)mv^2
True or false: a ball on the ground has more potential energy than a ball on a hill.
True or false: giving a ball more height before dropping it, will directly increase its KE.
False.
the force that brings objects to the ground
What is gravity
How much PE does an object have if it has a mass of 10 kg and a height of 25 m?
2450 j
Define potential energy.
Energy which possesses due to its position within a gravitational field.
Define kinetic energy.
Energy an object possesses due to its movement
Potential or kinetic: a climber resting on the side a cliff.
What is potential?
true or false the faster something moves the more kinetic energy it has
What is true
How much KE does an object have if it has a mass of 10 kg and a velocity of 45 km/h?
10,125 j
T/F: A ball that is about to roll down a hill has PE.
True
How can I give a car more KE?
Give it more mass or give it more velocity.
At the top of a hill on a rollercoaster, the rollercoaster has maximum _______. On the way down the hill the ______ turns into ______. At the bottom of the hill, the rollercoaster has maximum ________.
What is PE, PE, KE, and KE?
What is the velocity of a ball that has a mass of 5 kg and a KE of 2500 j?
31.6 km/h