Running converts what type of energy into mechanical energy

What is the main reason the chemical energy of a fuel is never entirely converted to mechanical energy in an engine? A) Some of the energy is lost as heat. B) Some of the energy is converted to mass.

A student starts a food fight by throwing a 0.5 kg burrito at some girl he likes. He throws it kind of hard so he accelerates it at 3 m/s^2 how much force did this take?

What is the momentum of a bowling ball with mass 5 kg and velocity 10 m/s

The Earth is a closed system to matter. What does that mean?

Which is not a benefit of burning garbage for fuel

If the diameter of the space station is 730 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2?

The act, process or state of the change in place or position oa a body with respect to time and relative to the observer is said to be : - 1. Rest 2. Stationary 3. Motion 4. None of the above

During a snowball fight two balls with masses of 0.4 kg and 0.6 kg, respectively, are thrown in such a manner that they meet head on and combine to form a single mass of 1 kg. the magnitude of intial velocity foreach is 15 m/s.

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2