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Aleksandr [31]
1 year ago
7

How does position depend on time on a free falling motion, for short distance, near the surface of the earth?

Physics
1 answer:
Korvikt [17]1 year ago
7 0

Answer:

if an object is in free fall for a longer time its position will increase at an exponential rate because the object is accelerating

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Can someone in the fewest SIMPLE words possible, compare nuclear fusion and fission in terms of what happens in the reactions, t
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In Nuclear Fusion, the reaction is involved in the merging of small atoms and high energy is produced, while in Nuclear Fission, it involves in the splitting of large atoms wherein radoactive isotopes are involved.
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The maximum mass of a white dwarf is ______ times the mass of the sun.
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Answer:

(A)

Explanation:

about 1.4 times the mass of our sun.

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3 years ago
Hoover Dam on the Colorado River is the highest dam in the United States at 221m, with a power output of 680 MW. The dam generat
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Answer:

<u> Power = 9.75 ×10^8\frac{kgm^2}{s^3}</u>

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  • Power is rate of change of energy.
  • Here gravitational energy is transferred to kinetic energy of water at a definite rate.

For one second 650m^3 of water flows out down to 150m oh depth.

So, the energy at a height of 150m is transformed to kinetic energy.

for a second,

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The total gravitational potential energy stored in water is

    = <u>mass of water × height× gravity</u>

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As it is transformed in a second it is also equal to <u>Power.</u>

4 0
3 years ago
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A ball bounces changing velocity from vi=15m/s[D] to vf=15m/s[U] in t=0.01s. The balls acceleration is *
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Answer:

Option (A) is correct

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a= (vf-vi)/ t

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a= ( 15-15)/0.01

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2 years ago
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A ball is thrown straight up with an initial velocity of 6.4 m/s. It travels for 0.64 seconds, and has a change of position of 2
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Answer:

V = 0.9 m/s

Explanation:

The parameters given are:

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V^2 = U^2 - 2gH

Since the ball is going upward, g will be negative

Substitute all the parameters into the formula

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V^2 = 0.78

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V = 0.9 m/ s approximately

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3 years ago
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