Science
posted by Jacob .
Two children, m1 = 50 kg and m2 = 55 kg, and a plastic sled of mass 35 kg start at rest and slide for 5.0 s down a hill. The force of gravity pulling the children and sled down the hill is 470 N but the snow provides a frictional force of 325 N. At the bottom of the hill, the children and sled encounter a frozen pond (frictionless surface). Upon sliding onto the frozen pond, the children and sled continue moving, without any additional force, across the middle to the other side.
If the pond has a circumference of 163 m, to the nearest tenth of a second, how long did it take the children and sled to travel to the other side of the pond?
Respond to this Question
Similar Questions

physics
A child and sled with a combined mass of 40.0 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 9.0 m/s at the bottom, what is the height of the hill? 
physics
A child and sled with a combined mass of 40.0 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 9.0 m/s at the bottom, what is the height of the hill? 
physics
You are pulling your sister on a sled to the top of a 20.0 m high, frictionless hill with a 10.0° incline. Your sister and the sled have a total mass of 50.0 kg. You pull the sled, starting from rest, with a constant force of 127 … 
physics
A child and sled with a combined mass of 58.9 kg slide down a frictionless hill that is 8.09 m high at an angle of 23◦ from horizontal. The acceleration of gravity is 9.81 m/s2 . If the sled starts from rest, what is its speed … 
physics
A child and sled with a combined mass of 47.8 kg slide down a frictionless hill that is 7.18 m high. If the sled starts from rest, what is its speed at the bottom of the hill? 
Science
Two children, m1 = 50 kg and m2 = 55 kg, and a plastic sled of mass 35 kg start at rest and slide for 5.0 s down a hill. The force of gravity pulling the children and sled down the hill is 470 N but the snow provides a frictional force … 
physics
A child and sled with a combined mass of 53.0 kg slide down a frictionless hill that is 7.63 m high. If the sled starts from rest, what is its speed at the bottom of the hill? 
physics
A child and sled with a combined mass of 47.4 kg slide down a frictionless hill that is 8.61 m high. If the sled starts from rest, what is its speed at the bottom of the hill? 
physics
A child and sled with a combined mass of 48.4 kg slide down a frictionless hill that is 7.15 m high. If the sled starts from rest, what is its speed at the bottom of the hill? 
physics
A child and sled with a combined mass of 45.0 kg slide down a frictionless hill that is 8.79 m high. If the sled starts from rest, what is its speed at the bottom of the hill?