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3 years ago

What force acts on a projectile in the horizontal direction?

Physics

2 answers:

Anna35 [415]3 years ago

5 0

Answer:

the answer is gravity

Explanation:

natita [175]3 years ago

3 0

Answer: horizontal force

Explanation:

i think

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During a tennis match, a player serves the ball at 27.4 m/s, with the center of the ball leaving the racquet horizontally 2.34 m

Maurinko [17]

a. The ball's horizontal and vertical positions at time $t$ are given by

$x=\left(27.4\,\dfrac{\rm m}{\rm s}\right)t$

$y=2.34\,\mathrm m-\dfrac g2t^2$

The ball reaches the net when $x=12.0\,\rm m$ :

$12.0\,\mathrm m=\left(27.4\,\dfrac{\rm m}{\rm s}\right)t\implies t=0.438\,\rm s$

At this time, the ball is at an altitude of

$2.34\,\mathrm m-\dfrac g2\left(0.438\,\mathrm s\right)^2=1.40\,\mathrm m$

which is 1.40 m - 0.900 m = 0.500 m above the net.

b. The change in angle gives the ball the new position functions

$x=\left(27.4\,\dfrac{\rm m}{\rm s}\right)\cos(-5.00^\circ)t$

$y=2.34\,\mathrm m+\left(27.4\,\dfrac{\rm m}{\rm s}\right)\sin(-5.00^\circ)t-\dfrac g2t^2$

The ball reaches the net at time $t$ such that

$\left(27.4\,\dfrac{\rm m}{\rm s}\right)\cos(-5.00^\circ)t=12.0\,\mathrm m\implies t=0.440\,\mathrm s$

at which point the ball's vertical position would be

$2.34\,\mathrm m+\left(27.4\,\dfrac{\rm m}{\rm s}\right)\sin(-5.00^\circ)\left(0.440\,\mathrm s\right)-\dfrac g2\left(0.440\,\mathrm s\right)^2=0.343\,\mathrm m$

so that the ball does not clear the net with 0.343 m - 0.900 m = -0.557 m.

5 0

3 years ago

Write 3 rules that describe the possible behaviors that occur when objects with different charges are brought close together

REY [17]

Explanation:

1. attract

2.repel

3. no effect

8 0

3 years ago

How do abiotic and biotic factors in Mono Lake compare to those in the ecosystem in which you live?

Arturiano [62]

Answer:

Biotic factors are the living component of an environment while abiotic factors are the non living component of an environment.

Biotic factors of Mono lake include plants, animals, fungi, algae and bacteria

Abiotic factors of Mono lake include sunlight, temperature, moisture, wind or water currents, soil type, and nutrient availability.

While the biotic and abiotic factors on Land inhabited by humans including Me are :

Biotic factors-Plants ,animals, bacteria

Abiotic factors-Sunlight, heat/ temperature, Climate, weather, water sources.

7 0

3 years ago

Which voice can produce a pitch that has a speed of 343 m/s and a wavelength of 0.68 m?

lys-0071 [83]

The answer for you question would be : Soprano
One of the type of voice that could produce a pitch that has a speed of 343 m/s and a wavelength of 0.68 m would be soprano

hope this helps

8 0

3 years ago

5. Draw conclusions: How are potential energy, kinetic<br> energy, and total energy related?

TEA [102]

Answer:

they are all involved in our daily lives

Explanation:

3 0

3 years ago