Help!!! The skater with a mass of 50 kg has a velocity of 20 m/s at the bottom of the ramp.
How high vertically up the ramp will the skater be able to go? (Round off the
acceleration of gravity to 10 m/s/s)

If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume