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A high school student hits a nail with a hammer. During the collision, there is a force___________.
the same as
none of these
.01 kg mass moving at 200 m/s
power
70 J
always true
always against the rules.
on the nail and also on the hammer
A job is done slowly, and an identical job is done quickly. Both jobs require the same amount of work, but different amounts of ________.
the same as
none of these
.01 kg mass moving at 200 m/s
power
70 J
always true
always against the rules.
on the nail and also on the hammer
An arrow in a bow has 70 J of potential energy. Assuming no loss of energy to heat, how much kinetic energy will it have after it has been shot?
the same as
none of these
.01 kg mass moving at 200 m/s
power
70 J
always true
always against the rules.
on the nail and also on the hammer
Horseplay or practical jokes in the laboratory are
the same as
none of these
.01 kg mass moving at 200 m/s
power
70 J
always true
always against the rules.
on the nail and also on the hammer
The recoil momentum of a cannon that kicks is _____ the momentum of the cannonball it fires.
the same as
none of these
.01 kg mass moving at 200 m/s
power
70 J
always true
always against the rules.
on the nail and also on the hammer
Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude, but in the opposite direction to that of the first object.
the same as
none of these
.01 kg mass moving at 200 m/s
power
70 J
always true
always against the rules.
on the nail and also on the hammer
Which of the following has the least momentum?
the same as
none of these
.01 kg mass moving at 200 m/s
power
70 J
always true
always against the rules.
on the nail and also on the hammer
The following activity is permitted in the laboratory:
the same as
none of these
.01 kg mass moving at 200 m/s
power
70 J
always true
always against the rules.
on the nail and also on the hammer
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