A60-kg skier starts at the top of a 10-meter high slope. at the bottom, she is traveling 10 m/s. how much energy does she lose to friction? question 30 options: she doesn't lose any because mechanical energy is always conserved. 5,880 j 3,000 j 2,880 j

Answer : The correct option is, 2880 J

Solution :

According to the question,

K.E + Energy lose to friction = P.E

where,

m = mass of object = 60 Kg

g = acceleration due to gravity =

h = height = 10 m

v = velocity of an object = 10 m/s

Now put all the given values in the above formula, we get the energy lost to friction.

Therefore, the amount of energy she lose to friction is, 2880 J

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr