Question

60 pOINTS HELP PLEASE 4. A 20-kg child is tossed up into the air by her parent. The child is 2 meters off the ground traveling 5 m/s.

Circle one: KE / GPE / both

Show your work for finding the values of each type of energy the object has:

Answer 1

K.E=0.5mv^2
GPE=mgh
The child has both K.E and GPE

`ke = 0.5 * 20 * {5}^(2) \\ ke = 10 * 25 \\ ke = 250 \: joules`

`gpe = 20 * 9.81 * 2 \\ gpe = 40 * 9.81 \\ gpe = 392.4 \: joules`
g is taken as 9.81