Posted by **Need Help** on Sunday, September 27, 2009 at 3:36pm.

A particle experiences a constant acceleration that is south at 2.50 meters per second squared. At t=0, its velocity is 40.0 meters per second east. What is its velocity at t=8.00 seconds?

- physics -
**MathMate**, Sunday, September 27, 2009 at 5:21pm
The acceleration is due south, so the east-west component (40 m/s) is not altered.

For the north-south component, at t=0,

initial velocity = 0 m/s

after 8 seconds,

velocity v=0+(-2.5)8 = -20 m/s (<0 for south)

Velocity = (40,-20) m/s

Magnitude = √(40²+20²)

=44.72 m/s

direction:

atan(-20/40)=-26.57°, or

26.57° south of east.

## Answer this Question

## Related Questions

- Physics - A particle moved along the x axis with a constant acceleration of -85....
- algebra - The formula below can be used to find the distance (d) traveled by an ...
- algebra - The formula below can be used to find the distances (d) traveled by an...
- Science - Which of the following is an accurate statement of an acceleration ...
- chemistry - If a skateboarder is going 40 meters per second after 3 seconds, ...
- physics i suck - an antelope moving with constant acceleration covers the ...
- geometry - a car traveling at 30 meters per second begins to slow down at a ...
- physics - An animal-rescue plane due east at 50 meters per second drops a bale ...
- physics - To solve you use y=VoT+aT2. You know that initial velocity is 0 so the...
- physics - A bicyclist moving at a constant speed takes 10.0 seconds to travel ...