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goldfiish [28.3K]
1 year ago
15

For general projectile motion, the horizontal component of a projectile's velocity aSelect one:O a. continuously increases.O b.

continuously decreases.O c. is zeroO d. remains a non-zero constant.O e. any of the above, depending on position.
Physics
1 answer:
liubo4ka [24]1 year ago
3 0

ANSWER:

d. remains a non-zero constant.

STEP-BY-STEP EXPLANATION:

If we consider that there is no air resistance and that the horizontal component would be at x, the velocity remains a non-zero constant

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Explanation:

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As we know,the distance travelled in one revolution is the circumference of the circle.

So,d=2\pi r

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d=2\times \pi \times 0.5=\pi m

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Let s be the speed of the ball.

s=\frac{d}{T}=\frac{\pi }{2}ms^{-1}

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Anything that has mass
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If the car's speed decreases at a constant rate from 77 mi/h to 50 mi/h in 3.0 s, what is the magnitude of its acceleration, ass
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a = \frac{v-u}{t}

Here, v is final velocity, u is initial velocity and t is time taken by the car.

Given u =77 \ mil/h ,v = 50 mi/h and t = 3.0 s = 3.0 \times \frac{1 \ h}{3600} = 8.3 \times 10^{-4} h

Therefore, from above equation

a =  \frac{50 \ mi/h -77 \ mi/h}{8.33 \times 10^{-4} h} = - \frac{27 \ mi/h }{8.33 \times 10^{-4} h} = - 3.2 \times 10^{4} \ mi/h^2.

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3 0
3 years ago
A horizontal spring is lying on a frictionless surface. One end of the spring is attached to a wall, and the other end is connec
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Answer:

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The initial Energy =  U  = (1/2) kA²    

where A is the amplitude and k is the spring constant.

The final energy is potential and kinetic energy

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where  x  is the displacement

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4 0
3 years ago
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