Kinetic
What is the equation/formula to find Kinetic Energy?
KE = 1/2 M V2
What is the equation/formula to find Potential Energy?
PE= M G H
Convert
20 cm= _______ m
20 cm = .20 m
Find the Kinetic Energy of a .27 kg ball, that is rolling at the speed of 15 m/s.
KE = 1/2 M V2
KE= (1/2)(.27)(15)2
KE= (1/2)(.27)(225)
KE= 30.375 J
Find the Potential Energy of an object that has a mass of 50 kg and is 50 meters off the ground.
PE= m g h
PE= (50)(9.8)(50)
PE= 24,500 J
Convert
397000 mg= _________ kg
.397000 kg
A car traveling with a velocity of 40 m/s and has a mass of 1120 kg. Find the Kinetic Energy.
KE= 1/2 m v2
KE= (1/2)(1120)(40)2
KE=(1/2)(1120)(1600)
KE= 896,000 J
Brian has an object suspended in the air. It has a mass of 100 kg and is .25 meters above the ground. Find the Potential Energy.
PE= m g h
PE= (100)(9.8)(.25)
PE= 245 J
Convert
78 m = ________km
.078 km
Calculate the Kinetic Energy of a car that has a mass of 1000 kg and is moving at a rate of 20 m/s.
KE= 1/2 m v2
KE= (1/2)(1000)(20)2
KE= (1/2)(1000)(400)
KE=200,000 J
A 60 Kg person walks from the ground to the roof of a 74.8 m tall building. How much potential energy does she have at the top of the building?
PE= m g h
PE= (60)(9.8)(74.8)
PE= 43,982.4 J
Convert
9 mm = ________ cm
A golf club has a mass of 0.75 kg and hits a golf ball with a velocity of 60 m/s. Calculate the kinetic energy of the golf club.
KE= 1/2 m v2
KE= (1/2)(0.75)(60)2
KE= (1/2)(0.75)(3600)
KE= 1,350 J
A 1 kg rock is at a height of 100 meters. What is the rock's potential energy?
PE= m g h
PE= (1)(9.8)(100)
PE= 980 J
Convert
.0003 km = _______ cm
30 cm