Question

You throw a softball (of mass 400 g) straight up into the air. it reaches a maximum altitude of 17.3 m and then returns to you. what is the gravitational potential energy of the softball at its highest position? assume the ball departed from and returned to ground level.

Answer 1

m=400/1000=0.4kg          h=17.3             g=9.8m/s2                                                               P.E=mgh                                                                                                              P.E=0.4(9.8)(17.3)                                                                                                  P.E=67.8J                                                                                                                                  

Answer 2

Answer:

The gravitational potential =

67,816Joules

Explanation:

Gravitational potential is given by:

P.E=m×g×h

P.E= 400× 17.3 ×9.8 =67,816 Joules