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Tasya [4]
2 years ago
10

An autographed baseball rolls off of a 0.99 m high desk and strikes the floor 0.34 m away

Physics
2 answers:
Sever21 [200]2 years ago
8 0

why does the baseball have to be autographed?

il63 [147K]2 years ago
5 0

Answer:

Below

Explanation:

First, we need to find the time of flight of this projectile :

     t=\sqrt{\frac{2dy}{g} }

     t =\sqrt{\frac{2(0.99)}{9.81}

     t =\sqrt{\frac{1.98}{9.81}

     t =\sqrt{0.20183486238}

     t = 0.448489506 seconds

Now we can use this formula to find the initial horizontal velocity :

     Dhorizontal = Vhorizontal (time)

     0.34 m = Vx(0.448489506) \\0.76m/s^2 = Vx

Therefore the initial velocity of the baseball was 0.76 m/s^2 [Forward]

Hope this helps! Best of luck <3

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Determine the thrust produced if 1.5 x 10^3 kg of gas exits the combustion chamber each second, with a speed of 4.00 x 10^3 m/s.
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Answer:

The thrust is 6\times 10^6\ N

Explanation:

Given that,

Mass of gas, m=1.5\times 10^3\ kg

The rate at which the gas is expelling, \dfrac{dv}{dt}=4\times 10^{3}\ m/s

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We know that force is equal to the rate of change of momentum. So,

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Also, p = mv

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So,

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2 years ago
A rope exerts a 280 N force while pulling an 80 Kg skier upward along a hill inclined at 12o. The rope pulls parallel to the hil
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Answer:

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Explanation:

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