what is kinetic energy of a 1100 kg car traveling at a speed of 20 m/s?
Just checking my answer.
Ke= 1/2mv^2
Ke= 1/2(1100kg)(20 m/s)^2
Ke= 220000 J
You are correct! To calculate the kinetic energy (Ke) of an object, you can use the formula Ke = 1/2mv^2, where m is the mass of the object in kilograms and v is the velocity (speed) of the object in meters per second.
In this case, you have a 1100 kg car traveling at a speed of 20 m/s. Plugging these values into the formula, we get:
Ke = 1/2(1100 kg)(20 m/s)^2
= 1/2(1100 kg)(400 m^2/s^2)
= 220000 J
So the kinetic energy of the car is indeed 220,000 Joules. Well done!