While running a person transforms about `0.60 J` chemical energy to mechanical energy per stop per kilogram of body mass. If a `60 kg` runner transform energy at a rate of `72 W` during a race, how fast is the person running? Assume that a running step is `1.5m` long

How fast should a man of masss 60kg run so that his kinetic energy is 750 J ?

At what speed a person having 60 kg mass should run to acquire 750 J kinetic energy?

How fast should a student of mass 50 kg run , so that his kinetic energy becomes 625 J ?

While resting,the average human male use 0.2 dm^(3) of O_(2) per hour at S T P for each kg of body mass. Assume that all this O_(2) is used to produce energy by oxidising glucose in the body.What is the mass of glucose required per hour by a resting male having mass 60 kg. What volume , at S T P of CO_(2) would be produced.

A van of mass 1500kg travelling at a speed of 15 m/s is stopped in 10 s Assuming that all the mechanical energy lost appears as thermal energy in the brakes find the average rate of production of thermal energy in cal s^(-1)

A body of moment of inertia 0.5 kg m^(2) is rotating about a given axis at the rate 1 rps . What is kinetic energy of rotation of the body about that axis ?

A feverish person is running a temperature of 101^@F and is given paracetamol to lower his temperature. Due to medicine, there is an increase in rate of evaporation of sweat from his body. The mass of the person is 50 kg and the specific heat of human body is approximately about 1 cal g^(-1) ""^@C^(-1) . If the fever is brought down to 98^@F in 25 mins, the average rate of extra evaporation caused by the medicine is R in g "min"^(-1) , then the value of 87R/100 is (Latent heat of water at that temperature=580 g/cal)