1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
HACTEHA [7]
2 years ago
5

A ball thrown vertically upwards from ground

Physics
1 answer:
weqwewe [10]2 years ago
4 0

parabolic motion

\tt t_{max}=\dfrac{2u~sin~\alpha }{g}

\tt h_{max}=\dfrac{u^2sin^2\alpha }{2g}

vertically upwards ⇒ α = 90°⇒sin 90° = 1

\tt 4=\dfrac{2u}{10}\rightarrow u=20~m/s

\tt h_{max}=\dfrac{20^2}{2.10}=\boxed{\bold{20~m}}

You might be interested in
Playing tetherball, a boy hits the 0.45 kg ball, moving toward him initially at 4.6 m/s, in the opposite direction at 2.5 m/s. H
saul85 [17]

Answer:

HI

Explanation:

8 0
3 years ago
Robin would like to shoot an orange in a tree with his bow and arrow. The orange is hanging yf=5.00 myf=5.00 m above the ground.
tensa zangetsu [6.8K]

Answer:

h' = 55.3 m

Explanation:

First, we analyze the horizontal motion of the projectile, to find the time taken by the arrow to reach the orange. Since, air friction is negligible, therefore, the motion shall be uniform:

s = vt

where,

s = horizontal distance between arrow and orange = 60 m

v = initial horizontal speed of the arrow = v₀ Cos θ

θ = launch angle = 30°

v₀ = launch speed = 35 m/s

Therefore,

60 m = (35 m/s)Cos 30° t

t = 60 m/30.31 m/s

t = 1.98 s

Now, we analyze the vertical motion to find the height if arrow at this time. Using second equation of motion:

h = Vi t + (1/2)gt²

where,

Vi = Vertical Component of initial Velocity = v₀ Sin θ = (35 m/s)Sin 30°

Vi = 17.5 m/s

Therefore,

h = (17.5 m/s)(1.98 s) + (1/2)(9.81 m/s²)(1.98 s)²

h = 34.6 m + 19.2 m

h = 53.8 m

since, the arrow initially had a height of y = 1.5 m. Therefore, its final height will be:

h' = h + y

h' = 53.8 m + 1.5 m

<u>h' = 55.3 m</u>

4 0
3 years ago
Why do we measure volume
Misha Larkins [42]

Explanation:

Volume is often quantified numerically using the SI derived unit, the cubic metre. The volume of a container is generally understood to be the capacity of the container; i. e., the amount of fluid (gas or liquid) that the container could hold, rather than the amount of space the container itself displaces.

We don't use units like triangular prism feet or spherical kilometers because the three axes don't make a "corner" of any other shape other than a cube.

Glad I was able to help!!

7 0
3 years ago
Read 2 more answers
Suppose an airplane is flying at an altitude of 11,000m. How ill the air pressure and temperature change as the airplane comes d
Luden [163]
At 11,000 meters, the plane travels at the troposphere. In this particular layer of the atmosphere, the temperature gets colder, and the air pressure becomes less when the altitude increases.

Therefore, once the plane comes down to land, the decreasing altitude would cause the temperature to become warmer, and the air pressure to increase.
6 0
3 years ago
Th he action and reaction forces in any situation will always be what
kifflom [539]
The action and reaction forces in any situation will always be equal and opposite
8 0
3 years ago
Other questions:
  • Engineers have designed experimental cars that use liquid hydrogen for fuel instead of gasoline. this is an example of _____. re
    12·2 answers
  • Calculations made using Celsius or Fahrenheit will not work for gas law calculations
    11·1 answer
  • 8. A car moving at 35 m/s has 675 joules of KE. What is the mass of the car?
    10·1 answer
  • Identify the scientific law from among the following statements. A) The book fell 1 meter in 0.5 seconds B) Gravity acts upon ea
    6·2 answers
  • Explain why the baking instructions on a box of cake mix are different for high and low elevations. Would you expect to have a l
    14·1 answer
  • 4. Jed drops a 10 kg box off of the Eiffel Tower. After 2.6 seconds, how fast is the box moving? (Neglect air resistance.)
    6·1 answer
  • When waves of equal amplitude from two sources are out of phase when they interact it is called?
    12·1 answer
  • A disk has 128 tracks of 32 sectors each, on each surface of eight platters. The disk spins at 3600 RPM and takes 15 ms to move
    9·1 answer
  • Your 5th-grade brother keeps telling you that speed and velocity are the same
    8·1 answer
  • For a relative frequency distribution, relative frequency is computed is computed as ____________.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!