# Recent content by icanletyougo

1. ### Kinectic Energy

circular motion?
2. ### Kinectic Energy

Homework Statement Is it possible for an object to experience a net acceleration, yet maintain a constant kinetic energy? Homework Equations The Attempt at a Solution I think no because the kinetic energy equation is KE = (0.5)mv^2, because KE is not change, so v will not change...
3. ### CIrcular motion

Homework Statement A object(have mass M1) is placed at a R1 distance from the center of a horizontal surface that can rotate. The surface rotation is very FAST INCREASE ( tangential acceleration is non-negligible) until the surface reaches a cirtical rotation rate. At that instant, the object...
4. ### Average Acceleration of the object

oK....Thank you so much...I got that...:)
5. ### Projectile Question involving xyz coordinate plane

Thanks Adrian. This is my picture of the 2D motion [PLAIN]http://img190.imageshack.us/img190/6691/24050103.jpg [Broken] So I have a question, Do I need the OA length in order to find the time the ball travel? This is my work...but I'm not sure it is correct... OA = 167.7 m From...
6. ### Projectile Question involving xyz coordinate plane

I think I need to find the distance from the tee to the hole. And then from that, use the x-component to figure out t, and then substitute t into the y-component eq. to find initial velocity. But I'm not sure...Can anyone help me? Thank you very much
7. ### Average Acceleration of the object

Yea...I know if the direction of displacement is vertical, the acceleration will be equal to the gravity....But if the direction of displacement is horizontal, i'm not sure about its acceleration.....Thanks
8. ### Average Acceleration of the object

Homework Statement The graph of displacement as a function of time of the object is shown below [PLAIN]http://img11.imageshack.us/img11/8962/displaceemt.jpg [Broken] What is the average acceleration of the object ? Homework Equations The Attempt at a Solution From the graph, I...
9. ### Projectile Question involving xyz coordinate plane

Homework Statement Please help me graph this on xyz coordinate plane A golfer strikes the ball of the tee at x=0;y=0;z=0. The hole center is located at a distance of 150m north(+x) and 75m west(+y) of the tee. The upper edge of the hole is 10m below(-z) the height of the tee. If the the...