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irina [24]
3 years ago
11

After a projectile is fired into the air, what is the magnitude of the acceleration

Physics
1 answer:
sergiy2304 [10]3 years ago
7 0

Answer: Option A;  9.8 m/s^2

Explanation:

When an object is in the air, and there is no air resistance acting on the object, the only force that will act on the object is the gravitational force (on the vertical axis).

Then, if the only force acting on the object is the gravitational force, the acceleration of the object will be equal to the gravitational acceleration.

We know that the gravitational acceleration is equal to:

g = 9.8m/s^2

Then the acceleration on the vertical axis will be equal to:

a(t) = 9.8m/s^2

The correct option is the first one:

A. 9.8 m/s^2

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6 0
3 years ago
How do the wavelengths of electromagnetic energy absorbed by materials on earth compare?
Dmitrij [34]

Explanation:

The shorter wavelength electromagnetic waves from sun are absorbed by earth material in form of short wavelength and the radiated wavelength are longer ones. Also higher energy waves are of shorter wavelength and lower energy waves have longer wavelength. So, they are absorbed as short wavelength and radiated back as long wavelength.

8 0
3 years ago
A race car has a maximum speed of 0.104 km/s .What is this speed in miles per hour ?
sweet [91]

Answer:

232.641374 mph

Explanation:

A race car has a maximum speed of 0.104km/s

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Therefore the speed in miles per hour can be calculated as follows

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X = 0.104 × 2,236.936292

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Hence the speed in miles per hour is 232.641374 mph

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3 years ago
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melisa1 [442]

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6

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3 0
2 years ago
two forces A and B act on an object in opposite directions. A is bigger than B. What is the net force acting on an object?
Akimi4 [234]
Imagine a block with A pulling one way and B the other.

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