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kaheart [24]
3 years ago
12

A soccer ball is kicked horizontally off a bridge with a heigh of 36m. The ball travels 25m horizontally before it hits the pave

ment below. What was the soccer ball's speed when it was first kicked?
Physics
1 answer:
kow [346]3 years ago
5 0

Answer:

The initial velocity was U=22.14m/s

Explanation:

Step one :

Applying the third equation of motion

v² = u²+ 2as

Where v= Final velocity

U =initial velocity

a= acceleration due to gravity

S= distance or displacement

Step two :

V= 0

a= 9.81m/s²

S=25m

U=?

Step three :

Substituting into the equation we have

0²=U²+2*9.81*25

0=U²+490.5

U²=-490.5

U=√490.5

U=22.14m/s

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Answer:

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Explanation:

Given

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e + Fs = V²/gR where e = rate

e = V²/gR - Fs

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e = 0.287853367346938

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Hence, the required rate of superelevation for the curve is calculated as 28.79%

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Assuming that all the bullet’s energy heats the paraffin, its final temperature is 27.1 degree C. The correct option is D.

<h3>What is temperature?</h3>

Temperature is the degree of hotness and coldness of the material.

The energy of the bullet E = 1/2 mv²

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