The second choice on the list (#2 or B) is the correct one.
Car with a mass of 1210 kg moving at a velocity of 51 m/s.
2. What velocity must a 1340 kg car have in order to have the same momentum as a 2680 kg truck traveling at a velocity of 15 m/s to the west? 3.0 X 10^1 m/s to the west.
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Answer:
The equation to finding acceleration:
F/m=a
F= 20N
m= 4 kg
A= 20/4
A=5
<u>Acceleration= 5 m/s^2</u>
Work = (force) x (distance)
When a force of 10 newtons acts through a distance of 5 meters,
the work done is (10newtons x 5meters) = 50 joules.
It makes no difference what the purpose of the job is,
or what kind of contraption you use to do it.
Answer:
The more efficient the machine, the less energy wasted. For example, if a heat engine is able to turn 75 percent of the fuel it receives into motion, while 25 percent is lost as heat in the process, it would be 75 percent efficient
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