A train car, which has a mass of 2000 kg, is rolling along with a velocity of 20 m/s East. It strikes a stationary car, which also has a mass of 2000 kg, and they stick together after the collision. What is their final velocity?

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank