Estimate what is her velocity relative to the surface of ice

Assignment Help Physics

Reference no: EM13557716

A 45.0 kg girl is standing on a 159 kg plank. The plank, originally at rest, isfree to slide on a frozen lake, which is a flat, frictionlesssurface. The girl begins to walk along the plank at a constantvelocity of 1.41 m/s relative to theplank.

(a) What is her velocity relative to the surface of ice?

m/s

(b) What is the velocity of the plank relative to the surface ofice?

m/s

Reference no: EM13557716

Questions Cloud

Explain the piston is held in place with a pin : A vertical cylinder has a 10kg frictionless piston 5cm in radius. Inside the cylinder are 10 mols of helium at 2 bar and 300k. The piston is held in place with a pin. When the pin is pulled the piston rapidly rises until it can go no higher.

Evaluate what power must a motor have to perform this task : A skier of mass 70 kg is pulled up a slope by a motor drivencable. What power must a motor have to perform this task

Calculated the speed of rocket : Two rockets are each 1000m long in their rest frame. Rocket 1,traveling at .9*c relative to earth, in over taking rocket 2.Rocket 2 is only moving at .5*c. According to the crew on rocket 2,how long does it take for rocket 2 to completely pass?

Define the hydronium ion concentration step by step : A solution has a hydroxide ion concentration of 9.54 x 10 to the neg 5 M. what is the hydronium ion concentration step by step

Estimate what is her velocity relative to the surface of ice : A 45.0 kg girl is standing on a 159 kg plank. The plank, originally at rest, isfree to slide on a frozen lake, which is a flat, friction less surface. What is her velocity relative to the surface of ice

Discuss the overall research problem : Discuss the background of the research that will be conducted. The research should be in your area of interest - What are the objectives of the proposed research?

Direction of tension that right section of wire sustains : During a storm, a tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle between two fence posts. The limb exerts a downward force of 151 N on the wire.

State the final temperature of the mixture of water : Four ice cubes at exactly 0 ^\circ {\rm{C}} having a total mass of 53.5 g are combined with 110 g of water at 77^\circ C in an insulated container.

Determine what is the weight in newtons : The heaviest flying bird is the trumpeter swan, which weighsin at about 38 pounds at its heaviest. What is the weight in newtons

User Account

All Pages