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4vir4ik [10]
3 years ago
9

Janelle fired a projectile and measured its range. Shehypothesizes that if the magnitude of the initial velocity is doubled and

theangle of the velocity remains the same, the projectile will travel twice as far as itdid before. Do you agree with her hypothesis? Explain.
Mathematics
1 answer:
anyanavicka [17]3 years ago
6 0

Answer:

  No

Step-by-step explanation:

If the projectile lands at the same height it was launched from, then its time of flight will be proportional to the vertical speed. Its horizontal distance will be the product of its horizontal speed and its time of flight, so will be proportional to the square of the velocity.

If the velocity is doubled, the projectile can be expected to travel 2² = 4 times as far, not twice as far.

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Answer:

We note that the equation that is compatible with the given equation is the kinematic equation of free fall where;

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From which we have;

The time it takes the snowball to reach the ground is approximately 2.83 seconds

Step-by-step explanation:

The height of the building from which the ball is dropped, h = 39.2 m

The equation of the dropped a snowball, is given as follows;

t² = 39.2 × 9.8

Using the From the equation of free fall, we have;

s = u·t + 1/2·g·t²

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u = The initial velocity = 0 m/s

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Therefore, we get;

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