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
bogdanovich [222]
2 years ago
12

Allison kicks soccer ball so that it has an initial velocity 19 m/s at an angle of 21° above the ground. How much time does it t

ake for the soccer ball to reach its maximum height

Physics
1 answer:
Serga [27]2 years ago
6 0
The answer is B.
t = Vy / g
t =( 19 x sin21 ) / 9.8 = 0.69s
You might be interested in
The substances referenced in the table are being considered for use in cooking materials. Since the materials must be melted dur
frutty [35]

Brass requires more energy than silver

Aluminum requires more energy than copper

Aluminum requires more energy than brass

Explanation:

The specific heat capacity of a substance indicates the amount of heat energy required to raise 1 kg of that substance by 1 degree in temperature.

Mathematically:

C=\frac{Q}{m\Delta T}

where

Q is the heat supplied to the substance

m is the mass of the substance

\Delta T is the change in temperature

Therefore, the higher the specific heat capacity of a substance, the more energy is needed to increase its temperature.

Here we can compare the specific heat capacity of the materials mentioned:

Silver: C=0.233 J/gK

Brass: C=0.380 J/gK

Platinum: C=0.130 J/gK

Aluminium: C=0.910 J/gK

Copper: C=0.390 J/gK

Therefore, the correct statements are:

Brass requires more energy than silver

Aluminum requires more energy than copper

Aluminum requires more energy than brass

Learn more about specific heat:

brainly.com/question/3032746

brainly.com/question/4759369

#LearnwithBrainly

3 0
3 years ago
3. What is the relationship between the kinetic energy of molecules in an object and the object’s temperature? a. As the tempera
evablogger [386]

I think the answer A since temperature is the average kinetic energy of the molecules, so increasing temperature must increase kinetic energy

4 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST!!!
Annette [7]

Answer:

Explanation:

Divergent Boundary

7 0
3 years ago
Read 2 more answers
Which rule(s) is used for combining velocities?
DIA [1.3K]

Answer: B. Vector rules

Explanation:

4 0
3 years ago
A 5000 g toy car starts from rest and moves a distance of 300 cm in 3 s under the action of a single constant force. Determine t
sveticcg [70]

Answer:

3.33 N

Explanation:

First, find the acceleration.

Given:

Δx = 3 m

v₀ = 0 m/s

t = 3 s

Find: a

Δx = v₀ t + ½ at²

3 m = (0 m/s) (3 s) + ½ a (3 s)²

a = ⅔ m/s²

Use Newton's second law to find the force.

F = ma

F = (5 kg) (⅔ m/s²)

F ≈ 3.33 N

4 0
3 years ago
Other questions:
  • Help please...
    9·1 answer
  • 1pt Which is an observation? O A. A person hears the song of a bird. OB. A person suggests that bird calls are a means of commun
    10·1 answer
  • Which trait is determined entirely by heredity ?
    14·2 answers
  • PLZ HELP ME Which are not correct statements?
    10·1 answer
  • An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 150m to her bedroom. How much w
    11·1 answer
  • What is rhe average velocity od a baseball dropped from rest that falls for 2 seconds?​
    8·1 answer
  • Protective equipment and protective measures help keep all types of workers safe on the job.
    7·2 answers
  • You are trying to climb a castle wall so, from the ground, you throw a hook with a rope attached to it at 24.1 m/s at an angle o
    5·1 answer
  • Un cuerpo se desplaza del punto B al punto A. Si la posición del punto A es 77 m y la del punto B es -51 m. El desplazamiento de
    10·1 answer
  • 2. Two spherical objects with radii 1 m have masses of 1.5 kg and 8.5 kg. They are separated by a
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!