Recent content by imac

Homework Statement The x component of a certain vector is -45.0 units and the y component is +42.0 units. a) What is the magnitude of the vector? 61.56 units <----- I got this right b) What is the angle between the direction of the vector and the positive direction of x? Use the...

Thanks, I finally figured it out.

Homework Statement Add the following two displacement vectors; angles are measured from the x-axis with counterclockwise as positive. Displacement 1 is 3.0 m at 56° Displacement 2 is 4.1 m at 30° The total displacement vector has a Magnitude of _________m and a Direction...

Fixed it sorry, no... I'm not familiar with Galilean relativity.

I know this equation but I get the wrong answer: d=(vf^2-vi^2)/2a

Homework Statement Amtrak's 20th-Century Limited is in route from Chicago to New York at 112 km/h, when the engineer spots a cow on the track. The train brakes to a halt in 2.3 min, stopping in front of the cow. a) What is the magnitude of the train's (constant) acceleration? _______m/s^2...

Homework Statement A balloon is rising at 19 m/s when its passenger throws a ball straight up at 21 m/s. How much later does the passenger catch the ball?Homework Equations Don't know relevant equations. except v(t)=vot-0.5(9.8)t^2 but I don't think that works. The Attempt at a Solution I've...