Calculate your Kinetic Energy in Joules if you weigh50 kg and you are walking 2 meters/second.
This is what I did:
Ep=50kg x 9.8m/s^2 x 2m/s = 980 Joules.
What do I do next?
KE is 1/2 m v^2 Where is your 1/2 ? Why do you have g in the equation? Now point of fact,your mass is 50 kg, that is NOT what one "weighs".
Wait so I'm confused, the formula for KE is Ek=1/2mv^2
So it would be Ek=1/2(50kg) x 2m/s
Then I convert kg to pounds. There are .454kg in 1 lb so 50(.454)=22.7lbs
Ek=1/2(22.7lbs)(2m/s) = 22.7
Then what??
To calculate kinetic energy (KE), you need to use the formula KE = 0.5 x mass x velocity^2. The equation you used appears to calculate gravitational potential energy instead.
To find the correct value for kinetic energy, substitute the given values into the formula:
Mass (m) = 50 kg
Velocity (v) = 2 m/s
Plugging these values into the formula, we get:
KE = 0.5 x 50 kg x (2 m/s)^2
Now, simplify the equation:
KE = 0.5 x 50 kg x 4 m^2/s^2
Multiply the numbers:
KE = 100 kg m^2/s^2
This is the unit for Joules (J), which represents energy. Therefore, the kinetic energy of an object weighing 50 kg and moving at a velocity of 2 m/s is 100 Joules.