Saturday
April 19, 2014

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 - A craet is pulled right with a force of 82.0 N to the left with a ...
physics - A toy car is given a quick push so that it moves on an inclined ramp. ...
Physics - A crate is pulled right with a force of 82.0N to the left wtih a force...
Physics help!! - A crate is pulled to the right with a force of 80 N, to the ...
science physics - A cyclist is moving to the right at a constant speed. when he ...
physics - Hi I need help to figure out if these situations are possible or ...
Physics - You push your couch a distance of 3.8 m across the living room floor ...
Physics - Newton's second law states that if an object has zero acceleration, ...
Physics - A crate is pulled to the right with a force of 85.5 N, to the left ...
physics - under the influence of its drive force, snowmobile is moving at ...

Search
Members