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Alexxx [7]
3 years ago
5

A 0.500 kg block is sitting on a horizontal, frictionless surface. The block is connected to a horizontal spring with a force co

nstant of 124 N/m. The other end of the horizontal spring rests against a wall. When a 100.0 g arrow is fired into the wooden block (where it becomes embedded), the spring compresses by 25 cm.
a) What is the maximum potential energy of the spring?
(b) What was the speed of the arrow and block just after collision?
(c) What was the initial kinetic energy of the arrow?
(d) Explain any difference between (a) and (b).

Physics
1 answer:
Vlad1618 [11]3 years ago
5 0
Here it is.  Let me know if you have questions.

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A marathon runner runs at a steady 15 km/hr. When the runner is 7.5 km from the finish, a bird begins flying from the runner to
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Answer:

The value is D =  15 \  km

Explanation:

From the question we are told that

   The  speed of the marathon runner is  v  =  15 \  km /hr

   The distance from the distance from the finish is  d =  7.5 \  km

   The  speed of the bird is  v_b  =  30 \ km / hr

  Generally the time taken for the runner to reach the finish is mathematically represented as

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6 0
3 years ago
A 0.5 kg stone is raised from 1m to 2m height from the ground. what is the change in potential energy of the stone?
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Given: The mass of stone (m) = 0.5 kg

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where, all alphabets are in their usual meanings.

Now, we shall calculate the change in potential energy of the stone

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or,                = 0.5 kg ×9.8 m/s² ×(2.0 m - 1.0 m)

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4 0
4 years ago
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