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Julli [10]
3 years ago
12

40 POINTS EASY

Physics
1 answer:
11111nata11111 [884]3 years ago
7 0
We know, Mechanical Energy = K.E. + P.E.
As ball is at ground, P.E. would be zero. But as it is in motion, it must have some K.E. and that is:

K.E. = 1/2 mv²
K.E. = 1/2 * 1 * 2²
K.E. = 4/2
K.E. = 2 J

In short, Your Answer would be Option B

Hope this helps!
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Answer:

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Explanation:

It is given that,

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Using mirror's formula :

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v = -8.57 cm

The magnification of a mirror is given by,

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lana66690 [7]

Answer:

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