Monday
December 9, 2013

# Posts by Tyler

Total # Posts: 616

physics
A 55-kg woman contestant on a reality television show is at rest at the south end of a horizontal 148-kg raft that is floating in crocodile-infested waters. She and the raft are initially at rest. She needs to jump from the raft to a platform that is several meters off the nor...

2/3 = 4/6 (reading) + 1/6 (math) = 5/6 (reading/math) 6/6 - 5/6 = 1/6 (science) = 12 kids 12 kids = 1/6, 12*6 = 72 kids total

physics
nevermind, figured this one out...0.047

physics
You throw a 141 g ball straight up to a height of 45.0 m. Assume that the displacement of your hand is 0.70 m as you throw the ball straight up. How long is the ball is in your hand?

PHYSICS
conservation of mech energy... look at two spots, when the bob is at the lowest, and the highest... KE (lowest) + KE (highest) = U (lowest ) + U (highest) 40J + 0J = 0J + mgh 40J = 2.5kg(9.81m/s^2)(height) height = 1.6309m

physics
Half

physics
A rubber ball of mass 19.5 g is dropped from a height of 1.85 m onto a floor. The velocity of the ball is reversed by the collision with the floor, and the ball rebounds to a height of 1.55 m. What impulse was applied to the ball during the collision?

MATH