A60-kg skier pushes off the top of a frictionless hill with an initial speed of 4.0 m/s. how fast will she be moving after dropping 10 m in elevation? air resistance is negligible.

here we can use the concept of mechanical energy conservation

now we know that

m = 60 kg

As its going down

now from above equation we will have

so his speed will be 14.57 m/s

b

explanation:

gravity

explanation: