A child and sled with a combined mass of 34.3 kg slide down a frictionless hill, starting at the top. The sled starts from rest and acquires a speed of 5.81 m/s by the time it reaches the bottom of the hill. What is the height (in m) of the hill?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A child and sled with a combined mass of 34.3 kg slide down a frictionless hill, starting at the top. The sled starts from rest and acquires a speed of 5.81 m/s by the time it reaches the bottom of the hill. What is the height (in m) of the hill?

A bowling ball is attached to a 4.15-meter long cable and hung from the ceiling. The cable is kept taut and the ball is raised to an initial height of 1.7 meters above the classroom floor. It is released from rest and allowed to swing as a pendulum. Determine its speed (in m/s) when it is at a height of 1.27 meters above the floor.

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