Homework Help: Physics

Posted by Anonymous on Wednesday, January 2, 2008 at 4:12am.

1)The x- and y-components of a velocity vector of 100 N at 240 degrees would be?

2) A man pushes a lawn mower across the lawn exerting 5 N of force along the handle at an angle of 25 degrees with the ground. What is the x-component of the force he exerts?

Physics - drwls, Wednesday, January 2, 2008 at 7:41am
1) The answer depends upon what reference direction the 240 degrees is measured from, and whether + means couterclockwise or counterclowise. In mathematics and physics, polar direction angles are measured counterclockwise from +x. I assume you are dealing with a Force (F) vector and that is how the angle is measured.
Then the vector is in the third quadrant and

Fx = 100N cos 240 = -100N cos 60 = -50N
Fy = 100N sin 240 = -100N sin 60 = ?

2) 5N cos 25

Answer this Question

Related Questions

Physics - Can someone check my answers for the following questions. Thanks you. ...
12th grade Physics - A boy pushes a lawn mower with a mas of 17.9 kg starting ...
Physics - A man pushes a lawn mower on a level lawn with a force of 200N it 40% ...
Physical science - A man pushes a lawn mower on a level lawn with a force of 192...
Science - A man pushes a lawn mower on a level lawn with a force of 203 N. If 44...
Physics - A woman pushes a lawn mower with a con- stant force of 112 Newtons at ...
physics - A woman pushes a lawn mower with a con- stant force of 112 Newtons at ...
physics - A neighbor pushes a lawn mower on a lawn that is level with a force of...
physics - A person pushes a 14.0-kg lawn mower at constant speed with a force of...
physics - A person pushes a 17.0 kg lawn mower at constant speed with a force of...

For Further Reading

First Name:
School Subject:
Answer: