Answer:
3000 Joules
Explanation:
Hello, I can help you with this.
the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.it is given by:
[tex]E_{k}=\frac{1}{2}mv^{2}[/tex]
Step 1
all you have to do is to put the values into the equation
Let
m= 15 kg
speed=20 m/s
[tex]E_{k}=\frac{1}{2}mv^{2}\\E_{k}=\frac{1}{2}(15kg)(20\frac{m}{s}) ^{2}\\E_{k}=\frac{1}{2}(15kg)(400)\frac{m^{2} }{s^{2} } \\E_{k}=3000 kg \frac{m^{2} }{s^{2} }[/tex]
by definition
[tex]1Kg\frac{m^{2} }{s^{2} }=1 Joule[/tex]
so, the kinetic energy of the block is 3000 Joules
I hope it helps, Have a great day.
