Could you substitute the 9kg ball for 12kg please when doing the math? And 15m i
ID: 1559107 • Letter: C
Question
Could you substitute the 9kg ball for 12kg please when doing the math? And 15m is the same. Thanks
KIN 3323 Assignment Work-energy Name (Print clearly) Instructions 1. Show your work for Drawing week 3. Write your answer in the box when provided ap pwiane ben Staple the pages 4. Use appropriate units "es A 9 kg ball (initial vertical velocity 0m/s) was dropped from a height of 15 m. dropped was the potential and total mechanical eneray of the ball at the instant it was velocity total mechanical energy ofthe ballo3 second after it was dropped? GHin Conservation of c) What was the potential, kinetic, and total mechanical energy of the ball when the ball was dropped to a height of 1m? (Hint: Conservation of energy. You can calculate the kinetic energy of the ball based on the total mechanical energy and the potential energy) 3pts)Explanation / Answer
m = 12 kg
a)
KE = 0.5*m*v^2
= 0.5*12*(0)^2
= 0
PE = m*g*h
= 12 * 9.8*15
= 2205 J
Total Energy = PE + KE
= 1764 J
b)
total mechanical energy will always be conserved
So,
it will be 1764 J
c)
PE = m*g*h
= 12 * 9.8*1
= 117.6 J
total mechanical energy will always be conserved
Total Energy = 1764 J
KE = total energy - PE
= 1764 J - 117.6 J
= 1646.4 J