Final position kv A small block of mass m slides to the left on a frictionless, horizontal surface with speed v. Then, the block slides up a m rough ramp that has an incline angle of 0. The coefficient of The Rough surface H. kinetic friction between the ramp and box is Initial position acceleration due to gravity is g. Frictionless surface What is the height h of the block when its speed up the ramp equals kv, where 0 < k < 1? h = help contact us terms of use privacy policy careers about us

A 73-kg person in a moving car stops during a car collision in a distance of 0.76 m. The stopping force that the air bag exerts on the person is 8000 N. Part A What quantities can be determined using this information? Check all that apply. O speed of the person before the air bag opens up O time interval for the airbag to bring the person to a stop Omass of the car O acceleration at which the airbag brings the person to a stop 0 mass of the air bag

Review A sailboat can be propelled into the wind by a maneuver called beating to windward. Beating requires the sailboat to travel in a zigzag pattern at an angle to the wind that is greater than the no-go zone, which is shaded red in (Figure 1). When a sailboat is just outside the no-go zone (boats B in the figure) the wind Part A exerts a force F on the sail that has a component in the direction of motion v. Similar comments apply to boats C. The work done by the wind on the sail is W = Fdcose, and because v = d/t, the propulsion power P = W/t delivered to the sailboat is Fvcose, where 0 is the angle between the sail force and the Assuming that F and v have the same magnitudes for each sailboat, will the propulsion power delivered to sailboats B be greater than, less than, or the same as the propulsion power delivered to sailboats C? direction of motion. O Less than Figure 1 of 1 O Greater than O Equal to Wind direction Submit Request Answer Part B If F = 900 N and v = 15 m/s, what…

Policies Current Attempt in Progress A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 93.2 kg. The mass of the rock is 0.315 kg. Initially the wagon is rolling forward at a speed of 0.456 m/s. Then the person throws the rock with a speed of 16.6 m/s. Both speeds are relative to the ground. Find the speed of the wagon after the rock is thrown (a) directly forward in one case and (b) directly backward in another. (a) v = i (b) v = i eTextbooks

While they were playing, Matthew picked up his younger brother Cyril. Consider what force acts on Cyril. a In which direction and in which direction does that force act? 6 What are the two interacting bodies? c Label and correctly label the force acting on Cyril.