PHYSICS HIGH SCHOOL

A stone is dropped from a cliff. What will be its speed when it was fallen 100 m?

Answers

Answer 1
Answer:

Answer:

final velocity will be44.72m/s

Explanation:

HEIGHT=h=100m

vi=0m/s

vf=?

g=10m/s²

by using third equation of motion for bodies under gravity

2gh=(vf)²-(vi)²

evaluating the formula

2(10m/s²)(100m)=vf²-(0m/s)²

2000m²/s²=vf²

√2000m²/s²=√vf²

44.72m/s=vf
Answer 2
Answer:

Answer:

44.2m/s

Explanation:

2gs = vf*2 - vi*2

2 x 9.8 x 100 = vf*2 - 0

1960 = vf*2

vf = 44.2 m/s

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PLEASE HELP!! ILL MARK BRAINLYEST!!New substances are produced in a chemical change.


True
False

Answers

The Answer is true hope this helps

When you decrease the length of the effort arm on a lever which of the following happens to effort force? A. Force will decrease B. Force will increase C. Force will vary D. Force will remain the same.

Answers

The force will increase

The current stellar "yardstick" is the ______

Answers

The light year is the unit often used to describe distance in terms of astronomy
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A change that occurs when a solid melts or a liquid freezes is an example of a phase change.a. True
b. False

Answers

Condensation is the change ofthe substance from liquid to solid phase. Example of this is the formation ofice. Vaporization is the change of substance from liquid to gas phase. Exampleof this is the boiling of water. Deposition is the change of a substance fromgas to solid phase. Example of this is the formation of ice on a winter day.Sublimation is the change of a substance from solid to gas phase. Example ofthis is dry ice. These are all examples of a phase change. The answer is letter A.

Answer:

True

Explanation:

If heat is transferred away from a gas, which could happen?A) The gas may explode.

B) The gas may become a liquid as it loses energy.

C) The heat capacity of the gas may increase.

Answers

the answer would be B) The gas may become a liquid as it loses energy.

hope this helps you

Which of the following cannot be transmitted through avacuum?
a. ocean waves
b. UV rays
C. Laser
d. X-rays
e. microwave

Answers

A, C its not possible newtons law
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