Potential or Kinetic?
A ball flying through the air
What is kinetic energy?
The potential energy of a 65 kg rock climber at the top of a cliff 35 meters high
What is 22,295 J?
A running faucet transfers this kind of energy
What is mechanical energy?
The equation for force
What is force = mass x acceleration?
(F=ma)
Unit for force
What is newtons (N)?
Sitting in the top of a tree
What is potential energy?
The kinetic energy of a 44 kg cheetah running at 31 m/s
What is 21,142 J?
A light bulb gives off this kind of energy
What is light energy?
(bonus for light AND thermal energy)
The equation for gravitational potential energy (GPE)
What is PE= mass x gravity acceleration x height?
(PE=mgh)
Unit for work and energy
What is joules (J)?
Roller coaster dropping from the top of the first hill
What is kinetic energy?
(bonus for kinetic and potential)
What is 1000 J?
A solar panel converts this energy to this energy
What is light energy to electrical energy?
What is KE=0.5 x mass x speed squared
(KE=0.5mv²)
Unit for power
What is watts (W)?
An archer with their bow drawn (pulled back)
What is potential energy?
The work done by a person exerting 150 N of force to lift an object 2.0 m
What is 300 J?
A boiling tea kettle converts this energy to this energy
What is thermal energy to mechanical energy?
The equation for work
What is W=force x distance?
(W=Fd)
Number of joules (J) in a kilojoule (kJ)
What is 1000?
The chemical bonds in sugar, in a food before you eat it
What is potential energy?
(bonus for chemical energy)
The power output of an elevator that takes 20 seconds to do 100,000 J of work
What is 5000 W?
Stretching a rubber band then releasing it into the air transforms this energy into this energy
The equation for power
What is power = work/time?
(P=W/t)
1. Units for velocity
2. Units for acceleration
1. What is meters per second (m/s)?
2. What is meters per second squared (m/s²)?