What is the kinetic energy of a 24-kg mass that is moving with a velocity of 2 m/s?
2 answers:
Answer:
48 J
Explanation:
Kinetic energy can be found using the following formula:
where <em>m </em>is the mass in kilograms and <em>v </em>is the velocity in m/s.
We know the mass is 24 kilograms and the velocity is 2 m/s Therefore, substitute 24 in for <em>m </em>and 2 in for <em>v. </em>
<em /><em />
Evaluate the exponent first. 2^2 is the same as multiply 2, 2 times.
2^2=2*2=4
Multiply 24 and 4
Multiply 96 and 1/2, or divide 96 by 2.
Add appropriate units. Kinetic energy uses Joules, or J
The kinetic energy is 48 Joules
You might be interested in
The final temperature of the system is 32.5°
we know, H = mcT
where, H = Heat content of the body
m = Mass,
c = Specific heat
T = Change in temperature
According to to the Principle of Calorimetry
The net heat remains constant i.e.
⇒ the heat given by water = heat accepted by the aluminum container.
⇒ 330 x 1 x (45 - T) = 855 x
x (T - 10)
⇒ 14,850 - 330T = 183.21T - 1832
⇒ - 513.21 T = - 16682
or T = 32.5°
we know, H = mcT
where, H = Heat content of the body
m = Mass,
c = Specific heat
T = Change in temperature
According to to the Principle of Calorimetry
The net heat remains constant i.e.
⇒ the heat given by water = heat accepted by the aluminum container.
⇒ 330 x 1 x (45 - T) = 855 x
⇒ 14,850 - 330T = 183.21T - 1832
⇒ - 513.21 T = - 16682
or T = 32.5°