Recent content by rachie9

OK, I have figured out what I need to do, but need help with the math! I need to solve for t in the 2 eqs: 2500 = Vocos35t and 900 = (Vosin35 - 4.9t)(t) and then set the equations equal to solve for Vo. But in the second equation, how do I solve for t?!

Since I'm given an angle, I feel like I should be using trig. Is there some way I can involve trig in the kinematic equations?

Do I use the kinematic equations Vo= at and x= .5Vo(t)?

A projectile is shot at a 35 degree angle from a height of 900 m. The it lands 2500 m away vertically. What was the initial velocity of the launch? I do not know what relevant equations to use- I've tried using the integrals of position vectors like Vox(t) = 2500 m and Voz(t) - 1/2...

A railroad car has crates in it with a coefficient of .5 w/ the car's floor. The train is moving at 22m/s, how short a distance can it be stopped w/o letting the crates slide? Fnet = 0 because you don't want sliding. a = coefficient of static friction x gravity When I solved for a...

Thanks for your help. I'm not sure how many components are in the net torque equation. I know there is a torque from the force of gravity, is there one for all the normal forces (acting on the ladder from the person, from the wall, and from the ground) as well? What about from friction...

The ladder is 5m leaning on a wall, and it is 2.5 m away from the bottom of the wall, so the angle between the ground and the ladder is 60 degrees. The contact interaction between the ladder and the ground has a static friction force of no more than .4 mg, and mg is the weight of the person on...