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NeTakaya
3 years ago
15

Josh has a helium-filled balloon. He wants to calculate the speed of his balloon as it rises to the ceiling. What two measuremen

ts should he take to calculate the average speed of his balloon?
Physics
1 answer:
alexandr402 [8]3 years ago
3 0

Answer:Distance and time

Explanation:

We know that average speed is the ratio of distance traveled by the particle over the time taken

So average velocity of balloon is

v_{avg}=\frac{\text{Distance}}{\text{Time taken}}

So, Josh should note the distance traveled by balloon and time taken in doing  so.

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Projectile <br> SHOW WORK<br> WILL MARK BRANLIEST <br> (Draw Picture and Label)
m_a_m_a [10]

a) The horizontal distance covered by the projectile is 600 m

b) The projectile reaches its maximum height after 3.00 s

c) The altitude of the highest point is 44.1 m

Explanation:

a)

The motion of the projectile consists of two independent motions:  

- A uniform motion (constant velocity) along the horizontal direction  

- A uniformly accelerated motion, with constant acceleration (acceleration of gravity) in the downward direction  

In this part A, we just need to analyze the horizontal motion. We know that:

  • The projectile travels horizontally with a constant velocity ov v_x = 100 m/s
  • The total time of flight of the projectile is t=6.00 s

Therefore, the horizontal distance covered by the projectile is given by

x=v_x t

And substituting, we find

x=(100)(6.0) = 600 m

b)

For this part, we need to analyze the vertical motion of the projectile.

First, we want to find the initial vertical velocity. We can do it by using the equation for the vertical displacement:

s=u_y t + \frac{1}{2}at^2

where:

u_y is the initial vertical velocity

a=g=-9.8 m/s^2 is the acceleration of gravity (negative because it is downward)

t is the time

s is the vertical displacement

We know that the total time of flight is t = 6.00 s: this means that when t=6, the projectile returns to its initial vertical position, so s = 0. Substituting and solving for u_y, we get

u_y = - \frac{1}{2}at=-\frac{1}{2}(-9.8)(6)=29.4 m/s

The vertical velocity then as a function of t is given by

v_y = u_y + at

And at the maximum height, it becomes zero: v_y = 0. Substituting and solving for t, we find the time at which the projectile reaches the maximum height:

t=-\frac{u_y}{a}=-\frac{29.4}{-9.8}=3.00 s

c)

To find the altitude of the highest point in the path, we use again the equation:

s=u_y t + \frac{1}{2}at^2

where

u_y = 29.4 m/s is the initial vertical velocity

t = 3.00 s is the time at which the projectile reaches the highest point

a=g=-9.8 m/s^2 is the acceleration of gravity

Substituting the values, we find

s=(29.4)(3.00)+\frac{1}{2}(-9.8)(3.00)^2=44.1 m

So, the highest point is at 44.1 m above the ground.

Learn more about projectiles:

brainly.com/question/8751410

#LearnwithBrainly

8 0
3 years ago
Can someone give me tips for science camp!! Please
Kamila [148]
Try to have a calm morning before camp. A good night’s sleep and a good breakfast. Make sure to be cautious, follow all the rules for certain areas ( some maybe restricted ). Take lots of photos doing wacky stuff! Learn but have fun learning
5 0
3 years ago
Read 2 more answers
Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthym
saw5 [17]

Answer:

oxygen was produced by phosynthesis

Explanation:

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8 0
3 years ago
The transfer of heat by the movement of a fluid is called
ikadub [295]

Answer:Convection

Explanation:

Convection is the heat transfer procedure by the movement of liquid or gas molecules. It is a combination of diffusion and bulk motion of molecules. Near the surface of the liquid diffusion process dominates while at certain height bulk motion of liquid dominates.

Convection can be

  • Natural
  • Forced

Natural : Natural convection occurs due to density differences

Forced: Force convection occurs when we apply external heat source.

   

8 0
3 years ago
2. Michelle bought 15.6 yards of fabric. She used 5.43 yards in her art 10 points
viktelen [127]
Do find the percentage you:
5.43/15.6=0.34

Time by 100:
34%

Closest answer is 35%

Hope this helps ;)
8 0
3 years ago
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