Initially at rest on the top of a frictionless snow covered

Assignment Help Physics

Reference no: EM13562422

Gayle runs at a speed of 3.20 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 18.5 m? Gayle's mass is 50.0 kg, the sled has a mass of 5.00 kg and her brother has a mass of 30.0 kg.

Reference no: EM13562422

Questions Cloud

Electrons velocity is directed toward the wire : A long straight wire carries a current of 88.0 A. An electron, traveling at 6.5x10^7 m/s, is 1.5 cm from the wire. What force (magnitude and direction) acts on the electron if the electron's velocity is directed toward the wire?

Explain a single extraction with 100ml of ligroin : What weight of A would be removed by four successive extractions with 25ml portions of ligroin? How much ligroin would be required to remove 98.5% of A in a single extraction

Evaluate the final equilibrium temperature : A 23.5 kg gold bar at25.5°C is placed in a large,insulated 0.800 kg glass container at 15.0°C with 2.00 kg ofwater at 25.0°C. Calculate the final equilibrium temperature

Compute the entropy of unfolding of lysozyme at 25.0°c : The protein lysozyme unfolds at a transition temperature of 75.5°C and the standard enthalpy of transition is 509 kJ mol-1. Calculate the entropy of unfolding of lysozyme at 25.0°C

Initially at rest on the top of a frictionless snow covered : Gayle runs at a speed of 3.20 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together th..

Evaluate the angular speed of the tube : A tube is sealed at both ends and contains a 0.0100-m longportion of liquid. The length of the tube is larger compared to0.0100-m. Find the angular speed (in rad/s) of the tube

Evaluate the mol fraction of dmf entering the purification : The purification unit can remove three-fourths of the DMF from the combined feed to the unit. Calculate the mol fraction of DMF entering the purification unit and the recycle ratio (recycle ratio = moles in recycle/moles in feed).

Determine the freezing point of a solution containing : The freezing point of pure camphor is 178.4 oC, and its molal freezing-point constant, Kf, is 40.0 oC/m. find the freezing point of a solution containing 3.00 g of a compound (molar mass = 125 g/mol) dissolved in 45.0 g of camphor.

Explain what is the molar mass of the solute : A solution is prepared by dissolving 4.78 g of an unknown nonelectrolyte in enough water to make 0.500 L of solution. the osmotic pressure of the solution is 1.98 atm at 27 degrees celcius. what is the molar mass of the solute

User Account

All Pages