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nevsk [136]
3 years ago
9

A 50 kg bear climbed on the tree branch 10 meters above the ground. If the bear descends to 5 meters above the ground, its poten

tial energy will be decreased by
A/ 4900 J
B/ 2450 J
C/ 2540 J
D/ 2500 J ​
Physics
1 answer:
Simora [160]3 years ago
6 0
<h3>Option A. 4900 J or joules</h3>
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An upright spring with a 96g mass on it is compressed 2 cm. When
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Initial velocity 10 m/s accelerates at 5 m/s for 2 seconds whats the final velocity
stiks02 [169]

Answer:

<em>The final velocity is 20 m/s.</em>

Explanation:

<u>Constant Acceleration Motion</u>

It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.

Being a the constant acceleration, vo the initial speed, and t the time, the final speed can be calculated as follows:

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The provided data is: vo=10 m/s, a=5\ m/s^2, t=2 s. The final velocity is:

v_f=10~m/s+5\ m/s^2\cdot 2\ s

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The final velocity is 20 m/s.

8 0
3 years ago
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