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Basile [38]
3 years ago
14

A baseball is thrown with a horizontal velocity of 40.20 m/s and no vertical velocity. If the ball leaves the pitcher's hand at

a height of 2.000 m above the ground, how far will the ball travel before it hits the ground? (Air resistance is negligible.)
A.12.68 m
B.16.48 m
C.25.73 m
D.51.46 m
Physics
1 answer:
Len [333]3 years ago
5 0

Option (c) is correct.

Explanation:

initial velocity along vertical=0

velocity along horizontal Vx=40.20 m/s

acceleration along the vertical=9.8 m/s²

displacement along vertical,h=2 m

using the kinematic equation

h= vi*t + 1/2 g t²

2=0(t) + 1/2 (9.8)t²

t²=0.408

t=0.639 s

now the displacement along vertical= x= Vx* t

x=40.20 (0.639)

x=25.73 m

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A baseball is thrown with a horizontal velocity of 40.20 m/s and no vertical velocity. If the ball leaves the pitcher's hand at
Len [333]

Option (c) is correct.

Explanation:

initial velocity along vertical=0

velocity along horizontal Vx=40.20 m/s

acceleration along the vertical=9.8 m/s²

displacement along vertical,h=2 m

using the kinematic equation

h= vi*t + 1/2 g t²

2=0(t) + 1/2 (9.8)t²

t²=0.408

t=0.639 s

now the displacement along vertical= x= Vx* t

x=40.20 (0.639)

x=25.73 m

5 0
3 years ago
According to the Stefan-Boltzmann law, how much energy is radiated into space per unit time by each square meter of the Sun’s su
nata0808 [166]

Answer:

3.8469943828\times 10^{26}\ W

Explanation:

\sigma = Stefan-Boltzmann constant = 5.67\times 10^{-8}\ W/m^2K^4

T = Surface temperature of the Sun = 5778 K

r = Radius of the Sun = 696000 km

From Stefan-Boltzmann law

F=\sigma T^4\\\Rightarrow F=5.67\times 10^{-8}\times 5778^4\\\Rightarrow F=63196526.546\ W/m^2K

Power is given by

P=F4\pi r^2\\\Rightarrow P=63196526.546\times 4\pi\times (696000000)^2\\\Rightarrow P=3.8469943828\times 10^{26}\ W

The power output of the Sun is 3.8469943828\times 10^{26}\ W

5 0
4 years ago
Which is a part of the convention cycle in earths atmosphere
vagabundo [1.1K]

is there supposed to be a picture

3 0
3 years ago
a force of 35N is exerted over a cylinder with an area of 5m^2. What pressure,in pascals, will be transmitted in the hydraulic s
gayaneshka [121]

Answer:

<h3>The answer is 7 Pa</h3>

Explanation:

The pressure transmitted in the hydraulic system can be found by using the formula

p =  \frac{f}{a}  \\

f is the force

a is the area

From the question we have

p =  \frac{35}{5}  \\

We have the final answer as

<h3>7 Pa</h3>

Hope this helps you

8 0
3 years ago
What is Power can be define as
Ksju [112]
Power (physics) In physics, power is the rate of doing work, the amount of energy transferred per unit time. In the International System of Units, the unit of power is the joule per second (J/s), known as the watt in honour of James Watt, the eighteenth-century developer of the steam engine condenser.
5 0
3 years ago
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