Editing Potential Energy And Kinetic Energy Calculations

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Equations: 
 
 
 
 
1a) What is the work done on lifting a 32.4 kg sample 4.5 meter into the air? 
 
 
 
 
 
 
 
 
 
1b) If it took the person, 14.5 sec to lift the sample, what was the power used? 
 
 
 
 
 
 
 
 
 
 
 
2) If 3,400J of work was done a 3.45kg sample, how height did they lift it? 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3) What is the kinetic energy (in J) for a 215kg car going 4.5 meters per sec?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
If you doubled the velocity to 9.0 meters per sec, how much kinetic energy do you have?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4) What is the mass of a car that is going 3.2 meters per sec and has 8500J of kinetic energy?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5) What is the mass of a car that is going 1.4 meters per sec and has 9500J of kinetic energy?
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
6) If a 453kg car has 12400J of kinetic energy has it moves, what is the velocity of the car? 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
If you double this velocity, what is the new kinetic energy of the car? 
 
 
 
 
 
 
 
 
Answer: 1a) 1428.8J, 1b) 98.5J/s, 2) 100.6m, 3) 2176.9J, 8707.5J, 4) 1660.2 kg, 5) 9693.8kg, 6) 7.4 m/s, 49612.6J

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