what is the kinetic energy of a 200 g bullet travelling at a velocity of 400 m/s?
To calculate the kinetic energy of an object, you can use the formula:
Kinetic energy = (1/2) * mass * velocity^2
In this case, the mass of the bullet is given as 200 grams. However, it would be much easier to work with kilograms instead of grams. Therefore, we need to convert the mass of the bullet from grams to kilograms:
mass = 200 grams = 200/1000 = 0.2 kilograms
Now, we can substitute the values into the formula:
Kinetic energy = (1/2) * mass * velocity^2
= (1/2) * 0.2 kg * (400 m/s)^2
= (1/2) * 0.2 kg * 160,000 m^2/s^2
= (0.1 kg) * 160,000 m^2/s^2
= 16,000 Joules
Therefore, the kinetic energy of the 200 g bullet traveling at a velocity of 400 m/s is 16,000 Joules.