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Work
Energy
Conservation Energy
Power
Word Problems
100
W=Fd
What is the work equation?
100
The energy of an object that is due to the object's motion.
What is kinetic energy?
100
In a closed, isolated system energy can neither be created nor destroyed
What is law of conservation of energy
100
W/t
What is the formula for power?
100
A new conveyor system at the local packaging plan will utilize a motor-powered mechanical arm to exert an average force of 890 N to push large crates a distance of 12 meters in 22 seconds. Determine the power output required of such a motor.
What is 485 Watts
200
The unit for work is _______.
What is Joule?
200
(1/2)mv^2
What is the formula for kinetic energy?
200
KEi+PEi=KEf+PEf
What is the equation for conversation of mechanical energy
200
Watts
What is the unit of measurement for power?
200
Eric is pulling on a rope to drag his backpack to school across the ice. He pulls upwards and rightwards with a force of 22.9 Newtons at an angle of 35 degrees above the horizontal to drag his backpack a horizontal distance of 129 meters to the right. Determine the work (in Joules) done upon the backpack.
What is 2.42 x 103 J
300
Work is a measure of ___________.
What is "how much energy is transferred"?
300
When energy is stored within an object.
What is potential energy?
300
At the bottom of a ski slope ______ energy is highest.
What kinetic
300
Power is the rate at which _______ is done.
What is work?
400
Work is done on an object when a _______ causes a ________ of the object.
What is force and displacement?
400
A twisted rubber band which powers a toy airplane is an example of ______________ energy.
What is elastic potential energy?
400
When a ball dropped from the air reaches ground level the system's potential energy is ____.
What is zero
400
A student that _____ up the stairs has more power.
What is runs?
400
Sophie leads South’s varsity softball team in hitting. In a game against New Greer Academy this past weekend, Chloe slugged the 181-gram softball so hard that it cleared the outfield fence and landed on Lake Avenue. At one point in its trajectory, the ball was 28.8 m above the ground and moving with a speed of 19.7 m/s. Determine the total mechanical energy of the softball.
What is 86.2 J
500
The equation used when work is done at an angle.
What is (W=fd cos 0)?
500
Energy is a measure of an object's ______.
What is "ability to cause change" ?
500
A ball bouncing transforms most of the _____ energy into _____ energy.
What is kinetic energy - elastic energy
500
How much energy does a 1,500 W microwave use if it is on for 40 seconds?
What is 60,000 J?
500
Katie who's mass is 56.8 kg is in her saucer sled moving at 12.6 m/s at the bottom of the sledding hill near Bluebird Lake. She approaches a long embankment inclined upward at 16° above the horizontal. As she slides up the embankment, she encounters a coefficient of friction of 0.128. Determine the height to which she will travel before coming to rest.
What is 5.60 m