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Firdavs [7]
3 years ago
9

A ball is released from a hot air balloon moving downward with a velocity of -10.0 meters/second and a height of 1,000 meters. H

ow long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.
Physics
2 answers:
Nikolay [14]3 years ago
7 0
Here, ball is released... and it is in free fall means with zero initial velocity.

We know, s = ut + 1/2 at²
Here, s = 1000 m
u = 0
a = 10 m/s2

Substitute their values, 
1000 = 0 + 1/2 * 10 * t²
2000 = 10 * t²
t² = 2000 /10
t = √200
t = 14.14 s

In short, Your Answer would be 14.14 seconds

Hope this helps!
Gnoma [55]3 years ago
5 0

Answer:

you know, s = ut + 1/2 at²

Here, s = 1000 m

u = 0

a = 10 m/s2

Substitute their values,  

1000 = 0 + 1/2 * 10 * t²

2000 = 10 * t²

t² = 2000 /10

t = √200

t = 14.14 s

Explanation:

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A small metal sphere has a mass of 0.11 g and a charge of -21.0 nC . It is 10 cm directly above an identical sphere with the sam
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Answer:

A. the magnitude of the force between the spheres is 3.97 x 10⁻⁴ N

B. the magnitude of its initial acceleration is 5.83 m/s²

Explanation:

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