Calculate the kinetic energy of an arrow of mass 0.5kg moving with a velocity of 12ms-1
The formula to calculate kinetic energy is:
Kinetic Energy (KE) = (1/2) * mass * velocity^2
Substituting the given values:
KE = (1/2) * 0.5kg * (12m/s)^2
= (1/2) * 0.5kg * 144m^2/s^2
= 0.25kg * 144m^2/s^2
= 36 Joules
Therefore, the kinetic energy of the arrow is 36 Joules.
To calculate the kinetic energy (KE) of an object, you can use the formula:
KE = 1/2 * m * v^2
Where:
KE = Kinetic Energy
m = mass of the object
v = velocity of the object
Now, let's substitute the values given in the problem:
m = 0.5 kg
v = 12 m/s
Plugging these values into the formula, we get:
KE = 1/2 * 0.5 kg * (12 m/s)^2
Simplifying this equation step-by-step:
KE = 1/2 * 0.5 kg * 144 m^2/s^2
KE = 0.25 kg * 144 m^2/s^2
KE = 36 kg m^2/s^2
Therefore, the kinetic energy of the arrow is 36 joules (J).