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SVETLANKA909090 [29]
3 years ago
5

Standing on the surface of the Earth you drop a rock down a well and it falls for 5 seconds before hitting the bottom. How fast

is it moving when it hits the bottom of the well
Physics
2 answers:
lbvjy [14]3 years ago
5 0

Answer:

it was moving at 50m/s when it hits the well bottom

Explanation:

Using Newton first law of motion;

V=u+gt

v=final velocity (what we are about to calculate)

u=initial velocity which is 0

g= acceleration due to gravity 10m/s^2(since its expressing free fall it will be       positive)

t=time taken 5seconds

v=0+10(5)

v=50m/s

strojnjashka [21]3 years ago
3 0

Answer:

49 m/s.

Explanation:

Given:

Time, t = 5 s

Vo = 0 m/s

a = 9.8 m/s2

Using equations of motion,

Vf = Vo + at

Vf = 0 + 9.8 × 5

= 49 m/s.

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3 years ago
A technician at a semiconductor facility is using an oscilloscope to measure the AC voltage across a resistor in a circuit. The
d1i1m1o1n [39]

Answer:

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Explanation:

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