Author Question: An astronaut on another planet drops a 1-kg rock from rest. The astronaut notices that the rock ... (Read 87 times)

karateprodigy · **on:** Jul 29, 2018

An astronaut on another planet drops a 1-kg rock from rest. The astronaut notices that the rock falls 2 meters straight down in one second. On this planet, how much does the rock weigh?

A) 1 N
B) 4 N
C) 5 N
D) 10 N

Question 2

A feather and a coin will have equal accelerations when falling in a vacuum because

A) their velocities are the same.
B) the force of gravity is the same for each in a vacuum.
C) the force of gravity does not act in a vacuum.
D) the ratio of both the feather's and coin's weight to mass is the same.
E) none of the above