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ICE Princess25 [194]
3 years ago
15

A lumberjack is chopping wood with an ax. How does the ax make the lumberjack's job easier? A. The ax is heavy so it can split w

ood more easily. B. The ax multiplies the amount of work that is applied by the lumberjack. C. The ax multiplies the amount of force that is applied to the wood. D. The ax reacts with the wood so that it can be split more easily.
Physics
1 answer:
zhenek [66]3 years ago
5 0

Answer: B

Explanation:

A machine multiplies the work output of a something by some amount. In this question, the ax is the machine. Thus, the ax is multiplying the work outputted by the lumberjack, so the answer is B. The reason it is not C is because there could be other forces interacting on the wood which the ax can affect.

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so your saying the start is 0 N and when he/she hits the ball its inertia is 3 N. if that is so m*v=

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7 0
4 years ago
A 2.0 kg block, initially moving at 10.0 m/s, slides 50.0 m across a sheet of ice beforecoming to rest. What is the magnitude of
inna [77]

Answer:

The magnitude of the average frictional force on the block is 2 N.

Explanation:

Given that.

Mass of the block, m = 2 kg

Initial velocity of the block, u = 10 m/s

Distance, d = 50 m

Finally, it stops, v = 0

Let a is the acceleration of the block. It can be calculated using third equation of motion. It can be given by :

v^2-u^2=2ad

-u^2=2ad

a=\dfrac{-u^2}{2d}\\\\a=\dfrac{-(10\ m/s)^2}{2\times 50\ m}\\\\a=-1\ m/s^2

The frictional force on the block is given by the formula as :

F = ma

F=2\ kg\times (-1)\ m/s^2\\\\F=-2\ N

|F| = 2 N

So, the magnitude of the average frictional force on the block is 2 N. Hence, this is the required solution.

8 0
3 years ago
The properties of ductility, malleability, ability to conduct heat and electricity are characteristics of what type of material?
laiz [17]
These are  the characterstics of metal.


                 hope it helps u........
8 0
4 years ago
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Blank is the change in position of an object
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Displacement is your answer :)
6 0
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Which of the following are disadvantages of solar energy? Check all that apply. A. It contributes to global warming. B. It is ex
guajiro [1.7K]
B, C, and D.

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