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
Marina CMI [18]
3 years ago
7

A girl kicks a blue ball with a velocity of 20.0 m/s at 65.0o. How long is it in the air?

Physics
1 answer:
34kurt3 years ago
8 0

Explanation:

t = usin©/g

Where t is the time to reach the maximum height

Time spent in air is T = 2t

Hence, T = 2usin©/g

T = 2 x 20 x sin 65°/ 9.8

T = 3.69s

You might be interested in
The bob (weight) at the end of a pendulum has a mass of 0.3 kilograms. The bob is pulled to position B and allowed to swing. It
Ivahew [28]

Answer:

0.147 J

Explanation:

The total energy that has been transformed into thermal energy is equal to the loss of gravitational potential energy between the initial situation (bob at h=0.5 m above the ground) and the final situation (bob back but at h=0.45 m above the ground).

Therefore, we have

E_{thermal}=\Delta U=mgh_1 - mgh_2 = mg(h_1 -h_2)

where

m = 0.3 kg is the mass of the bob

g = 9.8 m/s^2

h1 = 0.5 m is the initial height

h2 = 0.45 m is the final height

Substituting, we find the thermal energy

E_{thermal}=(0.3 kg)(9.8 m/s^2)(0.5 m-0.45 m)=0.147 J

Therefore, the energy transformed into thermal energy is 0.147 J.

3 0
3 years ago
EXPALIN,how liquids can leak slowly out of rubbish when left in landfill sites.
katen-ka-za [31]

Answer:

плщщащмапромплщкутчрралагыд

4 0
3 years ago
HELP ME PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE A student uses a spring scale attached to a textbook to compa
aleksandrvk [35]

Answer:

1,860

Explanation:

4 0
3 years ago
What happens inside when an air-filled, sealed can, is heated?.
g100num [7]

Answer:

It would explode

Explanation:

you're welcome

5 0
2 years ago
Read 2 more answers
Does a sled have inertia while sitting still
madam [21]

Answer:

Yes, a sled has inertia while sitting still.

Explanation:

From Newton's law of inertia, an object at rest will remain at rest unless it is acted upon by an external force. The reason the object will remain at rest unless an external force acts is because of inertia. Inertia means the resistance of an object to motion.

Thus, a sled hammer at rest will remain at rest unless it is acted upon by an external force. So we can conclude that it has Inertia.

7 0
3 years ago
Other questions:
  • A 10 kg migratory swan cruises at 20 m/s. A calculation that takes into ac- count the necessary forces shows that this motion re
    9·1 answer
  • A strip of copper metal is riveted to a strip of aluminum. the two metals are then heated. the coefficient of linear expansion o
    12·1 answer
  • An ideal monatomic gas at 300 k expands adiabatically and reversibly to twice its volume. what is its final temperature?
    12·1 answer
  • A 3.00-kg pendulum is 28.84 m long. what is its period on earth?
    12·1 answer
  • Hi, how do you draw two opposite rays and name them? Is it two of these "<--->" that intersect? Or two separate rays?
    12·1 answer
  • A closed container is filled with oxygen. the pressure in the container is 425 kpa . what is the pressure in millimeters of merc
    5·1 answer
  • As the bell rings, which energy transformation occurs? A. Mechanical energy is converted into sound energy. B. Chemical energy i
    15·2 answers
  • Smaller the surface area greater the gravitational force and vice–versa yes or no? justify the statement. ​
    13·1 answer
  • Identification of elements compounds and mixtures from a given table​
    6·1 answer
  • high temperature in metals leads to decrease in conductivity while increase in Temperature conductivity in semiconductor increas
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!