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Liula [17]
3 years ago
9

Consider a ball thrown straight up in the air. At what position is its kinetic energy a maximum?

Physics
2 answers:
Lady_Fox [76]3 years ago
7 0

Answer:

The answer to your question is at the point where it is thrown.

Explanation:

Kinetic energy is the energy that possesses a body due to its motion. Its formula is

          Ke = 1/2 mv²

Then, the kinetic energy is maximum when the velocity is the highest, and this is at the point where it is thrown, after this point, the velocity will be diminished and at the highest point will be equal to zero.

Aliun [14]3 years ago
6 0

Answer:

Explanation:

When a body is thrown upward, the body has it maximum velocity with the velocity of the throw and this velocity keep decreasing due to deceleration that is cause by acceleration due to gravity until it gets to the maximum height where the velocity is zero.

Since kinetic energy is determine by.

K.E = ½mv²

The mass of the body is constant all through.

Then, the maximum velocity is at the point of thrown, then the body has it maximum kinetic energy at the point of throw.

If we considered when it is landing too

It will have a maximum velocity at the point of throw again, where it lands on the hand.

The same kinetic energy will be recorded at the point of thrown and at the point it landed on his hands back.

This is why it has been recorded that, a straight bullet fired upward can kill someone at the point of return, because it will land at the same velocity it left the ground

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Answer:

Explanation:

A

35 N  Small Dog <=======BONE=========> Bigger Dog 42 N

B

Fnet = Large Dog - small dog The forces are subtracted because they are acting in opposite Directions.

Fnet = 42 - 35

Fnet = 7 N

C

m = 2.5 kg

F = 7 N

a = ?

F = m * a

7 = 2.5 a

a = 7 / 2.5

a = 2.8 m/s^2

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A ball is released from the top of a tower of height h meters. it takes T seconds to reach the ground . what is the position of
alekssr [168]

Answer:the

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Explanation:

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8 0
3 years ago
The loudness l of a sound, measured in decibels, is given by l=10log10r, where r is the sound's relative intensity. suppose one
marishachu [46]

Answer

given,                              

I is the loudness of sound

I = 10 Log₁₀ r                  

r is relative intensity                    

at when relative intensity is 10⁶        

I = 60 dB                                                  

how much louder when 100 people would be talking together

I = 10 Log₁₀ r                

I = 10 Log₁₀ (10⁶ x 100)  

I = 10 Log₁₀ (10⁸)                

I = 80 dB                      

hence, the intensity will be increased by (80 dB -60 dB) 20 dB when 100 people start talking together.

5 0
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TiliK225 [7]
It is a concave lens

Have a nice day
8 0
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