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inysia [295]
3 years ago
9

Sam is traveling at 25 m/s for a total of 50 seconds how far does Sam Travel

Physics
1 answer:
Vanyuwa [196]3 years ago
3 0

The distance travelled by Sam is 1250m

<u>Explanation:</u>

Given:

Speed, s = 25m/s

Time, t = 50 seconds

Distance, d = ?

We know:

Distance = speed X time

Substituting the values in the formula we get:

d = 25 X 50

d = 1250m

Therefore, the distance travelled by Sam is 1250m

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Question 1 of 25
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Answer:

<em>2.753*10^-11N</em>

Explanation:

According to Newton's law of gravitation, the force between the masses is expressed as;

F = GMm/d²

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d is the distance between the masses

Given

M = 3.71 x 10 kg

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d = 1300m

G = 6.67 x 10-11 Nm²/kg

Substitute into the formula

F = 6.67 x 10-11* (3.71 x 10)*(1.88 x 10^4)/1300²

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<em>Hence the gravitational force between the asteroid is 2.753*10^-11N</em>

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6 0
2 years ago
Where does pressure come from?
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It is made up of molecules which are pulled down to Earth by gravity. That pull makes molecules bump into each other, exerting pressure. Our bodies are specially adapted to living under 1 kilogram per square centimeter (14.7 pounds per square inch) of pressure pushing down on us at sea level!

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If no friction acts on a diver during a dive, then which of the following statements is true? A) The total mechanical energy of
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If no frictional work is considered, then the energy of the system (the driver at all positions is conserved.

Let
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The initial PE = mgh₁ and the initial KE  = (1/2)mv₁²
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m = mass of the diver.
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PE in position 1 is converted into KE due to the loss in height from position 1 to position 2.
 
Therefore
(KE + PE) ₁ = (KE + PE)₂

Evaluate the given answers.
A) The total mechanical energy of the system increases.
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B) Potential energy can be converted into kinetic energy but not vice versa.
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C) (KE + PE)beginning = (KE + PE) end.
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D) All of the above.
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4 0
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