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3 years ago

Calculate the vertical distance an object dropped from rest would cover in 12 seconds if it fell freely without air resistance

Physics

1 answer:

Nikolay [14]3 years ago

4 0

Answer:

705.6 m

Explanation:

time, t = 12 sends

initial velocity, u = 0

Acceleration due to gravity, g = - 9.8 m/s^2

As the object is falling freely so the initial velocity is zero.

Let the distance traveled by the body is h in time t = 12 s.

Use second equation of motion

$h = u t - 1/2 gt^{2}$

Ad the distance is downwards so take it as negative

So, $-h = 0 - 1/2\times 9.8 \times 12 \times 12$

h = 705.6 m

Thus, the distance traveled in 12 second is 705.6 m

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3 years ago

If the car passes point A with a speed of 20 m/s and begins to increase its speed at a constant rate of at = 0.5 m/s2 , determin

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Please find the image for the question as attached file.

Solution -

Given -

First of all we will calculate the velocity at point C,

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Substituting the given values in above equation, we get -

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Now we will determine the radius of curvature for the curve shown in the attached image

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Differentiating on both the sides, we get -

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