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3 years ago

X-14=42 x=56 56______a solution

Physics

1 answer:

vodomira [7]3 years ago

7 0

A + b = 56, 3a = b, therefore 4a = 56, 56/4 = 14, 14 * 3 = 42, a = 14, b = 42.

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A cannon is fired from a castle wall at some unknown height above the ground. The cannonball leaves the cannon with speed 30.0m/

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Answer:

Part a)

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Part b)

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Part C)

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Part d)

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Explanation:

Part a)

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now we have

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vertical speed = $v_y = vsin30 = 30 sin30 = 15 m/s$

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Part b)

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Part C)

At highest point of the projection

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Part d)

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in vertical direction we have

$v_y = v_i + at$

$v_y = 15 - 9.81(3.85)$

$v_y = -22.77 m/s$

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