The energy stored in a stretched spring is an example of __________ energy.
Fill in the blank(s) with correct word
[Ques. 2] The energy stored in a pile driver is an example of __________ energy.
Fill in the blank(s) with correct word
[Ques. 3] Linear momentum is conserved in __________ collisions.
Fill in the blank(s) with correct word
[Ques. 4] Kinetic energy is conserved in __________ collisions.
Fill in the blank(s) with correct word
[Ques. 5] An object has kinetic energy when it is __________.
Fill in the blank(s) with correct word
[Ques. 6] To be able to do work, a system must have _______.
Fill in the blank(s) with correct word
[Ques. 7] In a collision the total ____________ is the same before and after.
Fill in the blank(s) with correct word
[Ques. 8] Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.After the dropped box hits the floor, its kinetic energy is
a. 0.
b. equal to its potential energy.
c. is converted to internal energy.
d. none of the above.
[Ques. 9] A barbell is easier to twist when its weights are
a. close to the axis of rotation.
b. near the ends of the bar.
c. heavy.
d. light.
e. none of the above.
[Ques. 10] The total kinetic plus potential energy of a body
a. can be negative.
b. always stays constant if the body is freely falling.
c. always stays constant if friction is acting.
d. can remain constant even if the body's speed is decreasing.
Quick Reply
