Wednesday
April 1, 2015

Homework Help: Physics

Posted by Andrea on Wednesday, November 14, 2007 at 3:15pm.

a rock is thrown straight up which of the following statemetns concerning the net force acting on the rock at teh top of the path is true? assume air resistance is negligible.
a)it's equal to the weight of the rock
b) it is instantanwously equal to zero
c) it's direction changes from up to down
d) it's less than the weigh of the rock

F=ma and at the top of the path the rock's velocity instantaneously zero. so wouldn't the answer be c?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - A stone is thrown straight up. At the top of the path, the net force ...
Physics - A rock is thrown vertically from the edge of a cliff that is 500 ft ...
physics - One side of the roof of a building slopes up at 30.5. A roofer kicks ...
physics - One side of the roof of a building slopes up at 30.5. A roofer kicks ...
physics - One side of the roof of a building slopes up at 30.5. A roofer kicks ...
physics - A 17 kg rock, m, is on the edge of a 105 m cliff, h, as shown in ...
Physics - Four rocks are thrown horizontally from a building, with varying ...
Physics - Example 1: (Rock A) is thrown against a larger stationary rock(Rock B...
physics - c) A 0.26-kg rock is thrown vertically upward from the top of a cliff ...
Physics - a small rock with mass 0.20 kg is released from rest at point A which ...

Members