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WorksheetsEnergy 24
Total questions: 15
Worksheet time: 13mins
Energy is defined as:
(a)
What is the best reason for why the work done by a spring is hard to find?
Different springs have different stiffnesses.
Springs exert forces that change as the spring is stretched.
Not all springs are elastic.
Hooke's Law does not apply to springs.
In the equation, W = ΔE, the symbol "Δ" is best interpreted as:
(a)
In a system of two blocks, block 1 does work on block 2. Which block loses energy in this interaction?
Both Blocks
Neither Block
Block 1
Block 2
How much kinetic energy does a 4.4kg bowling ball have, 2.0 seconds after beginning free fall? Assume g = 10m/s/s and express the answer with two significant digits.
(a)
The fact that the work done by the net force on an object equals the kinetic energy transferred to that object is called the:
(a)
If work is being done by an object's weight, the type of energy the object receives is:
(a)
What symbol is used for the constant of proportionality in Hooke's Law?
(a)
The fact that the amount of GPE that a book on a shelf has is independent of how it got there is known as:
(a)
Define kinetic energy.
(a)
A car moving at 25km/h has a stopping distance of 10m. If the same car were instead moving at 75km/h, its stopping distance would be:
(a)
What device did we talk about using to help test whether or not an object has energy?
a spring
a 100g mass
an air track glider
a brick
How else, besides with work, may energy be transferred between objects?
(a)
In order for heat to flow between two objects, those objects must have different
masses
speeds
weights
temperatures
Which of the following is not a formula used to find some type of energy?
GPE = mgh
F = kx
K = 1/2mv2
EPE = 1/2kx2
