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
AURORKA [14]
3 years ago
5

If the mass of a ball is 50g on a height of 8m. Calculate the kinetic energy when it has a velocity of 3m/s.​

Physics
1 answer:
slega [8]3 years ago
7 0

Answer:

kinetic energy is 1/2mv^2.

which is 1/2×0.05×3^2

1/2×0.05×9.

1/2×0.45=

0.45÷2=0.225~0.23J

You might be interested in
What is the length of an aluminum rod at 65°C if its length at 15°C is 1.2 meters? A. 0.00180 meter B. 1.201386 meters C. 1.2
Deffense [45]

Answer:

Option B is the correct answer.

Explanation:

Thermal expansion

            \Delta L=L\alpha \Delta T

L = 1.2 meter

ΔT = 65 - 15 = 50°C

Thermal Expansion Coefficient for aluminum, α = 24 x 10⁻⁶/°C

We have change in length

          \Delta L=L\alpha \Delta T=1.2\times 24\times 10^{-6}\times 50=1.44\times 10^{-3}m

New length = 1.2 + 1.44 x 10⁻³ = 1.2014 m

Option B is the correct answer.

3 0
3 years ago
Read 2 more answers
9. When making a circuit, why is gold wiring not used?
daser333 [38]

Answer:

Gold is not used for making electric wires because it is too rare, and too costlier than Copper. Silver and copper are used for making wires. Copper is almost used in electric lines

4 0
3 years ago
What feelings do learned helplessness and depression have in common?
8_murik_8 [283]

Answer:

Learned helplessness can have a profound impact on mental health and well-being. People who experience learned helplessness are also likely to experience symptoms of depression, elevated stress levels, and less motivation to take care of their physical health. Not everyone responds to experiences the same way.

Explanation:

Brainlist will be very accepted ;D *wink*

6 0
3 years ago
Two waves overlap producing a new wave that exhibits destructive
suter [353]

Answer:B

Explanation:

8 0
3 years ago
Read 2 more answers
What is the kinetic energy of a 4 kg toy car moving at 5 m/s?
Mamont248 [21]

Answer:

50 J

Explanation:

<3

4 0
3 years ago
Other questions:
  • What is the definition for Astrology?
    15·1 answer
  • The Sun keeps all of the planets orbiting it because _____.
    15·2 answers
  • What is the heat-loss rate through the slab if the ground temperature is 5 ∘C while the interior of the house is 25 ∘C?
    14·1 answer
  • A 63.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to
    6·1 answer
  • A vertical solid steel post of diameter d = 26cmand length L = 2.40m is required to support a load of mass m = 7800kg . You can
    8·1 answer
  • What would be the force required to accelerate an object that weighs 35 N up at a rate of .60 m/s^2?
    7·1 answer
  • At what distance x from the center of the coil, on the axis of the coil, is the magnetic field half its value at the center?
    5·1 answer
  • Integrated Science- Study Guide: Water
    9·1 answer
  • What will happen to sun if the concentration of nitrogen, oxygen and carbon increases to 97 % and hydrogen and helium decreases
    7·1 answer
  • Why are nuclear reactions used in nuclear power plants
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!