Aski lift takes a 60 kg skier to the top of a 100 m slope. assuming her skis are frictionless, what is her speed when she gets to the bottom of the slope?

So basically we need to find the speed in this problem! Gravitational Potential Energy becomes Kinetic energy since she is going down a slope. The Formula for GPE is GPE=mgh and the formula for KE is KE=1/2mv^2.

m is mass, g is gravity, h is height and v is velocity (speed).

So...

GPE=KE

mgh=1/2mv^2

To Solve for V we need to get v on one side.

v=√2gh

Then Plug in the values!

g= 9.8 (It's always 9.8 if the problem doesn't say)

h= 100m

So...

v=√2(9.8)(100)

v=44.27 m/s!

. west

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg