Pleas solve this ASAP A person is running along level ground at constant speed.

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Pleas solve this ASAP

A person is running along level ground at constant speed. This certainly requires effort (expenditure of metabolic energy) so the person must be converting chemical energy to other forms. What form is most of this chemical energy converted into? thermal energy answer.. gravitational potential energy. kinetic energy . elastic potential energy Suppose that we have a gas at some temperature. If we increase the temperature by a factor of four (i.e. if we quadruple the temperature) then The root mean squared speed increases by a factor of 2 (it doubles). The root mean squared speed increases by a factor of about 4 (it quadruples). The mean speed stays the same. The mean speed increases by a factor of 2 (it doubles). The root mean squared speed decreases by a factor of 2 (it is halved). Two engines are being tested by technicians working for a car company. In the test, both engines have a power output of 1.0 times 104 W. They find that at this power output engine A burns fuel at a rate of 10.3 L/hour while engine B burns fuel at a rate of 11.1 L/hour. Which engine has a higher efficiency? engine B not enough information engine A their efficiencies are the same since they have the same power output

Explanation / Answer

b) This is because the energy is done aganist gravitation to move forward

a)

c)

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