Posted by Christina on Monday, June 6, 2011 at 6:23pm.
A stationary roller coaster at the top of its path is 30m about the ground. The car and its passengers have a mass of 400kg. What is the velocity of the car when it reaches the ground lever? The formula for velocity is (Distance/time)

Science  bobpursley, Monday, June 6, 2011 at 6:45pm
the gain in Kinetic energy is equal to the loss of potential energy
1/2 m v^2=mgh
solve for v

Science  Damon, Monday, June 6, 2011 at 6:45pm
mass cancels out, irrelevant
m g h = (1/2) m v^2
2 g h = v^2
v = sqrt (2 g h)
v = sqrt (2*9.8*30)
v = 24.2 m/s
Answer This Question
Related Questions
 Physics  At the beginning of a roller coaster ride the car is staionary at the ...
 Physics  A roller coaster works by gravitational energy. The coaster car is ...
 physic  A rollercoaster car has a mass of 500 kg when fully loaded with ...
 physics  A 500kg roller coaster starts from rest at points 35m above the ground...
 Physics  Steel Phantom is a roller coaster in Pennsylvania that, like the ...
 physics  A roller coaster has a vertical loop with radius 17.9 m. With what ...
 physics  A rollercoaster car has a mass of 1100 kg when fully loaded with ...
 physics  The mass of a rollercoaster car, including its passengers, is 481 kg...
 Physics  A 775 kg roller coaster car is at the top of a roller coaster car is ...
 physics  A 10,000N car is on a roller coaster. at the top of the tallest hill (...
More Related Questions