A curling rock with a mass of 20.0kg slides down a sheet of ice at a speed of 60.0 m/s. What is the kinetic energy of the curling rock?
Uhmm, i think the formula is.. Ek= 1/2mv2
Solve?
Yes, you are correct! The formula to calculate the kinetic energy (Ek) of an object is Ek = 0.5 * mass (m) * velocity squared (v^2). Let's plug in the given values:
Mass (m) = 20.0 kg
Velocity (v) = 60.0 m/s
Now we can substitute these values into the formula:
Ek = 0.5 * 20.0 kg * (60.0 m/s)^2
First, let's calculate the velocity squared:
(60.0 m/s)^2 = 3600 m^2/s^2
Now, let's substitute this value back into the equation:
Ek = 0.5 * 20.0 kg * 3600 m^2/s^2
Now, let's simplify the equation:
Ek = 0.5 * 72000 kg * m^2/s^2
Finally, let's calculate the kinetic energy:
Ek = 36000 kg * m^2/s^2
Therefore, the kinetic energy of the curling rock is 36000 joules.