Bob, mass 71 kg, steps on an elevator on the ground floor. The doors close, and it takes 1.2 seconds to reach its cruising speed of 1.5 m/s. The elevator moves upward at that speed for 40 seconds, then slows to a stop in another 1.2 seconds. (a.) What is Bob's apparent weight during the 1.2 seconds when the elevator is speeding up?

(b.) What is Bob's apparent weight during the last 1.2 seconds when the elevator is slowing down?

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

Ais the answer hope this