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3 years ago

5

a ball is projected horizontally with a velocity of 5 m per second from the top of a building 19.6 m high how long will the ball

take to hit the ground(g=10m/s2)

1 answer:

zepelin [54]3 years ago

8 0

Answer:

1.98s

Explanation:

The time taken to hit the ground is given by

h=ut+ 1/2 at^2

but u =0

so we have

h=1/2at^2

making t the subject

t=√2h/g

√2×19.6/10

1.98s

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sladkih [1.3K]

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The generator at a power plant produces AC at 20,000 V. A transformer steps this up to 355,000 V for transmission over power lin

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Answer:

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As the number of turns can not be in fraction so number of turns in the output coil is 39938

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