The ability to do work.
-Electricity
-Electromagnetic
-Mechanical
-Chemical
-Nuclear
-Thermal
100
What is the difference between potential and kinetic energy?
Potential energy is stored energy and kinetic energy is energy of motion.
200
The unit for this is meters per second (m/s)
What is velocity?
200
This is the symbol used for momentum.
What is "P"?
200
This is a collision where the objects couple, there is damage, and heat is generated.
What is an inelastic collision?
200
What is the equation for work?
Work = Force x distance
200
What is the equation for velocity.
Sqrt2gh
300
Joules (J) is the unit for this.
What is work?
300
Which has more momentum? A large truck moving 50 miles per hour or a small truck moving 50 miles per hour?
The large truck.
300
This is a collision where there is NO coupling or permanent damage done after the collision.
What is an elastic collision?
300
How much work is done when a 24 N force moves a block 4 m?
6 J
300
True or False. The equation for mechanical energy is
PE X ME
If false, give the correct equation.
False, ME = PE + ME
400
This is the unit for power.
What is watts (w)?
400
The equation for impulse.
Impulse = force x time (I=F*T)
400
What does the Law of Conservation of Momentum say?
The total momentum of vehicles before a collision is equal to the total momentum after the collision.
400
The equation for power.
Power = work/time
400
This says that energy can neither be created nor destroyed, just changed from one form to another.
What is the law of conservation of energy?
500
This is the unit for impulse.
What is newtons per second (n-s)?
500
A pitcher claims that he can throw a 0.145 kg baseball with a force of 500N for 1.2 seconds. What is the veloctiy of the ball as it leaves his hand?
2873.5 m/s
500
A 40,000 kg train moving at 8 m/s collides with a 10,000 kg truck that is stalled on the tracks. What is the velocity of both vehicles after the collision?
6.4 m/s
500
How long will it take a 100W motor to lift a 5kg mass 20m?
1 second.
500
At the top of a 1 m hill there is a 3kg marble. If the mecanical energy is 60 J, what is the velocity, potential, and kinetic energy?