At room temperature ice will melt while a brass lamp will stay as a solid. this must mean that the melting point of water is brass's melting point.
a) lower than
b) higher than
c) the same as

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

Idon’t quite understand this problem

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?