At least how many Calories does a mountain climber need in order to climb from sea level to the top of a 5.12 km tall peak assuming the muscles of the climber can convert chemical energy to mechanical energy with an efficiency of 10.0 percent. The total mass of the climber and the equipment is 80.8 kg. (Enter your answer as a number without units.)

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

the total distance traveled by the car is

30km + 49km = 79 km .