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
Nadya [2.5K]
3 years ago
7

A 3.2 kg ball that is moving straight upward has 17 Joules of kinetic energy. The total mechanical energy is 25 Joules.

Physics
1 answer:
bija089 [108]3 years ago
7 0

Answer:

h = 0.25 [m]

v = 3.26 [m/s]

Explanation:

In order to solve this problem, we must remember that mechanical energy is defined as the sum of kinetic energy plus potential energy.

E1 = Ek + Ep

where:

E1 = mechanical energy = 25 [J]

Ek = kinetic energy = 17 [J]

Ep = potential energy [J]

25 = 17 + Ep

Ep = 8 [J]

Now the potential energy is defined by the following equation:

Ep = m*g*h

where:

m = mass = 3.2 [kg]

g = gravity acceleration = 9.81 [m/s²]

h = elevation [m]

8 = 3.2*9.81*h

h = 0.25 [m]

The velocity can be calculated by means of kinetic energy.

E_{k} =\frac{1}{2} *m*v^{2}\\17 =\frac{1}{2} *3.2*v^{2} \\v= \sqrt{\frac{17*2}{3.2} }\\v = 3.26[m/s]

You might be interested in
Forces cause changes to the motion of objects. Name a force and describe two changes it makes.
otez555 [7]
Sliding and Static.

Would be the right one here.
3 0
3 years ago
Drag each tool to the correct category. Identify the common use of each tool used by space scientists and earth scientists
inysia [295]
<h3>Answer</h3>

Tools that magnify objects                   Tools that don't magnify objects

magnifying glass                                                  rule

telescope                                                            binoculars

microscope                                                    

   

<h3>Explanation</h3>

radio dish: is use to receive radio waves from the air.

binoculars: provide a magnified stereoscopic view of distant objects.

streak plate: is a technique which is used to grow bacteria on a growth media surface so that individual bacterial colonies are isolated and sampled.

wind vane: is used to determine wind direction.

ruler: is used for measuring a line.

microscope: is used to magnify the objects which are not visible by naked eyes.

magnifying glass: is used to magnifying tiny objects which are difficult to see yet they are visible.

telescope: use by space scientist to examine astronomical event that may take place in the sky which is too far.

8 0
2 years ago
Read 2 more answers
a train moving west with an initial velocity of 20m/s accelerates 4m/s2 for 10 seconds . during this time , the train moves a di
Blababa [14]
X=1/2at^2+vt+x0
x=1/2(4)(100)+20(10) = 400 m
8 0
3 years ago
BRAINLIEST AND 30 POINTS‼️‼️
kobusy [5.1K]

Answer:

802.3kilo joules of energy represents 191.75 kilo calorie

5 0
2 years ago
Experiment 7 static equilibrium of a rigid body.
Anna007 [38]

The answer is yes. You know this because the table isn't moving or rotating.

5 0
2 years ago
Other questions:
  • Write the following number in scientific notation 156.60
    11·1 answer
  • If a stone dropped into a well reaches the water's surface after 3.0 seconds, how far did the stone drop before hitting the wate
    10·2 answers
  • A roller coaster starts from rest at its highest point and then descends on its (frictionless) track. its speed is 40 m/s when i
    12·1 answer
  • List two fossil fuels. describe in general how fossil fuels were formed.
    9·1 answer
  • A particle that has mass m and charge q enters a uniform magnetic field that has magnitude B and is directed along the x axis. T
    10·1 answer
  • Solve for the dog's displacement during segments A and B (0-20s)?
    7·2 answers
  • How are domains arranged in materials that are magnetic and in ones that are not
    15·1 answer
  • Which is a “big idea” for matter and change?
    11·1 answer
  • A fighter plane is flying overhead at mach 1.20. What angle does the wave front of the shock wave produced make relative to the
    9·1 answer
  • Please Help! The thing is in the photo.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!