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## Homework Statement

I'm so lost in class right now... can anyone go through step-by-step how to solve this problem???

A small mass moves along a friction free level surface (of height 10 meters) at a speed of 5m/s and comes to a circular ramp. After it has descended 2 vertical meters, its speed is square root of 65 m/s. What is its acceleration at this moment (in polar form and ij format)?

The diagram coupled with this question is simply looks like the mass is travelling on top of a rectangle with a quarter circle attached to it, such that the radius of this quarter circle (90 degrees) is the aforementioned height of 10m. When the mass has descended 2 meters, it is on the curve of the quarter circle.

Acceleration of gravity is assumed to be 10m/s^2

## Homework Equations

mgsinθ?

F=ma?

Pythagorean Theorem?

## The Attempt at a Solution

Perhaps try to find out the acceleration components of the mass? But how to do that...