Author Question: A rock is thrown straight up with an initial velocity of 20.0 m/s. Ignore energy lost to air ... (Read 29 times)

WhattoUnderstand · **on:** Jul 28, 2018

A rock is thrown straight up with an initial velocity of 20.0 m/s. Ignore energy lost to air friction. How high will the rock rise?
a. 41.0 m
c. 20.4 m
b. 10.2 m
d. 11.5 m

Question 2

If an ideal gas does positive work on its surroundings, we may assume, with regard to the gas, that its:
a. temperature increases.
c. pressure increases.
b. volume increases.
d. internal energy decreases.