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Nostrana [21]
4 years ago
9

How long does it take the statue to reach the ground ?

Physics
1 answer:
Marrrta [24]4 years ago
8 0
The Statue of Liberty?
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As a science project, you drop a watermelon off the top of the Empire State Building, 320 m above the sidewalk. It so happens th
MA_775_DIABLO [31]

Answer:

Watermelon is going at a speed of 13.33\ \rm m/s in downward direction

Explanation:

Given

  • Height of the Empire State building = 320 m
  • Speed of the superman = 24 m/s

since both the motion of both  watermelon and the superman is under gravity. The acceleration of both is g in downwards direction. So the relative acceleration between them is zero and when they meet the relative distance covered by them will be the height of the Empire State building.

so let t be the time when they meet given by

\dfrac{320}{24}\\t=13.33\ \rm s

Now let v be the velocity of the the watermelon when they meet given by

v=gt\\v=9.8\times13.33\\v=130.63\ \rm m/s

6 0
3 years ago
Read 2 more answers
The NASA spacecraft Deep Space I was shut down on December 18, 2001, following a three-year journey to the asteroid Braille and
Basile [38]

Answer:

The mass will be "8.86 lb".

Explanation:

The given values are:

Force

= 70,000 mi/h

Speed

= 7900 mi/h

On applying the Law of momentum, we get

⇒  V_{1}m_{1}=V_{2}m_{2}

On putting the estimated values, we get

⇒  70000 = 7900\times mass \ of \ deepspace \ 1

⇒  mass \ of \ deepspace \ 1 = \frac{70000}{7900}

⇒                                    =8.86 \ lb

7 0
3 years ago
What’s I called when a HORIZONTAL VELOCITY DIVIDED BY VELOCITY.
alukav5142 [94]
Probably cosine. The horizontal component in ratio to the total velocity would give the cosine.
4 0
3 years ago
Karen drops a 2.0 kg rock from the top of a mountain. Determine the distance the rock travels after falling for 3 seconds assumi
Sophie [7]

The motion of the rock is a free-fall motion, which is a uniformly accelerated motion with constant acceleration g=9.8 m/s^2 downward, so the distance covered by the rock in a time t can be found by using the formula

S=\frac{1}{2} gt^2

By substituting t=3 s into the formula, we find the distance the rock travels after falling for 3 seconds:

S=\frac{1}{2} (9.8 m/s^2)(3 s)^2=44.1 m

7 0
4 years ago
A proton with a velocity in the positive x-direction enters a region where there is a uniform magnetic field B in the positive y
Genrish500 [490]

Answer:

Positive z direction.

Explanation:

The magnetic force acting on the electron is given by the formula as :

F=q(v\times B)

q is the charge on proton

v is the speed of proton

B is the magnetic field

It is mentioned that the proton is moving with a velocity in the positive x-direction. The uniform magnetic field B in the positive y-direction such taht,

q = +e

v = vi

B = Bj

F=e(v\ i\times B\ j)

Since, i\times j=k

F=(evB)\ k

So, the magnetic force acting on the proton in positive z axis. Hence, the correct option is (d) "positive z direction".

8 0
4 years ago
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