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nikklg [1K]
3 years ago
5

In free fall the object with less air resistance falls with a greater acceleration

Physics
1 answer:
ANEK [815]3 years ago
5 0

terminal velocity ... greater speed ... acc is 10m/s/s

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I think 36m/12s because 3×12 =36
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3 years ago
Helpp .....meeee pleaseee
Lady bird [3.3K]

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Explanation:

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5 0
3 years ago
A(n) 55.5 g ball is dropped from a height of 53.6 cm above a spring of negligible mass. The ball compresses the spring to a maxi
Serggg [28]

Answer:

The spring force constant is  k=243\ \frac{N}{m} .

Explanation:

We are told the mass of the ball is m=0.0555\ kg, the height above the spring where the ball is dropped is h=0.536\ m,  the length the ball compresses the spring is d=0.04897\ m and the acceleration of gravity is 9.8\ \frac{m}{s^{2}} .

We will consider the initial moment to be when the ball is dropped and the final moment to be when the ball stops, compressing the spring. We supose that there is no friction so the initial mechanical energy E_{mi} is equal to the final mechanical energy E_{mf} :

                                                    E_{mf}=E_{mi}

Initially there is only gravitational potential energy because the force of the spring isn't present and the speed is zero. In the final moment there is only elastic potential energy because the height is zero and the ball has stopped. So we have that:

                                                   \frac{1}{2}kd^{2}=mgh

If we manipulate the equation we have that:

                                                    k=\frac{2mgh}{d^{2} }

                                         k=\frac{2\ 0.0555\ kg\ 9.8\frac{m}{s^{2}}\ 0.536\ m}{(0.04897)^{2}m^{2}}

                                              k=\frac{0.58306\ \frac{kgm^{2}}{s^{2}}}{2.398x10^{-3}m^{2}}

                                                     k=243\ \frac{N}{m}

                                                   

                             

5 0
3 years ago
On a distance-time graph, time is shown on the y-axis.<br> A) True<br> B) False
Artist 52 [7]

Answer:

false : In distance time graph,time is shown on the x -axis

7 0
3 years ago
A neon light consists of a glass tube with metal wires at each end. When connected to a high-voltage source, the gas glows.
ivolga24 [154]
Can confirm C is correct
8 0
3 years ago
Read 2 more answers
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