Sunday
March 29, 2015

Homework Help: Physics 101

Posted by reda on Thursday, January 24, 2013 at 10:40pm.

What is the net force of a 5.0 N force and an 7.0 N force acting on an object for each of the following conditions?
(a) The forces act in opposite directions. ( )N
(b) The forces act in the same direction.( )N
----------------------------------------------
A force of 2.4 N is exerted on a 6.2 g rifle bullet. What is the bullet's acceleration?
( ) m/s2
----------------------------------------------
What is the force in newtons acting on a 4.6 kg package of nails that falls off a roof and is on its way to the ground?
( )N
----------------------------------------------
A small car with a mass of 800 kg travels northward at 28 m/s.
Does the car have more or less momentum than a truck with a mass of 12000 kg traveling eastward at 15 m/s?
more
less

How much more or less?
times
----------------------------------------------
Two ice skaters stand together as illustrated in Figure (a) below. They "push off" and travel directly away from each other, the boy with a velocity of v = 0.33 m/s to the left. If the boy weighs 728 N and the girl weighs 465 N, what is the girl's velocity after they push off? (Consider the ice to be frictionless. Enter the magnitude only.)
m/s
----------------------------------------------
An asteroid in an elliptical orbit about the sun travels at 1.5 106 m/s at perihelion (the point of closest approach) at a distance of 3.3 108 km from the sun. How fast is it traveling at aphelion (the most distant point), which is 9.2 108 km from the sun?
m/s
----------------------------------------------

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - What is an equilibrant? (Points : 1) an object that has zero net force...
physical science - find the net force produced by a 40 Newton force and a 50 ...
physical science - find the net force produced by a 40 Newton force and a 50 ...
physical science - find the net force produced by a 40 newton force and a 50 ...
physical science explorations - find the net force produced by a 40 newton force...
science - What is the net force of a 4.0N force and 8.0N force acting on an ...
science - What is the net force of a 4.0N force and 8.0N force acting on an ...
physics - A)An object at rest has no forces acting on it. B)An object can be ...
College physics - According to Newton's Third Law, for every action there is an ...
Science in motion pHY 102 - Find the net force produced by a 30-N force and a 20...

Members