Bobby and Thomas take a 16.1 pound sled to a frozen pond. The sled is initially at rest on the ice. Bobby weighs 96.6 pounds runs at 4 feet per second and jumps on the sled. A few seconds later, Thomas who weighs 112.7 pounds runs at 6 feet per second and jumps on the sled with bobby. Keep all values to 3 decimal places. Show all work. a. ) what is the velocity of the sled after Bobby jumps on it? b.) what is the velocity of the sled after Thomas jumps on it?
Bobby and Thomas take a 16.1 pound sled to a frozen pond. The sled is initially at rest on the ice. Bobby weighs 96.6 pounds runs at 4 feet per second and jumps on the sled. A few seconds later, Thomas who weighs 112.7 pounds runs at 6 feet per second and jumps on the sled with bobby. Keep all values to 3 decimal places. Show all work.
a. ) what is the velocity of the sled after Bobby jumps on it?
b.) what is the velocity of the sled after Thomas jumps on it?
Given:
Mass of sled (M) = 16.1 pounds.
Mass of Bobby (mb) = 96.6 pounds.
Mass of Thomas (mt) = 112.7 pounds.
Speed of Bobby (vb) = 4 f/s.
Speed of Thomas (vt) = 6 f/s.
Part a)
Let the velocity of sled before jump = vs
Velocity of sled after bobby jumps on it = Vs.
According to conservation of mass,
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