Exercise :: Kinematics of Particle (KOP) - General Questions

Kinematics of Particle (KOP) - General Questions

11.

The motorcyclist attempts to jump over a series of cars and trucks and lands smoothly on the other ramp, i.e., such that his velocity is tangent to the ramp at B. Determine the launch speed v_{A} necessary to make the jump.

A package is dropped from the plane which is flying with a constant horizontal velocity of v_{A} = 150 ft/s at a height h = 1500 ft. Determine the radius of curvature of the path of the package just before it is released from plane at A.

For a short time the position of a roller-coaster car along its path is defined by the equations r = 25 m, _{} = (0.3t) rad, and z = (-8 cos_{}) m, where t is measured in seconds, Determine the magnitudes of the car's velocity and acceleration when t = 4s.

The flight path of a jet aircraft as it takes off is defined by the parmetric equations x = 1.25 t^{2} and y = 0.03 t^{3}, where t is the time after take-off, measured in seconds, and x and y are given in meters. At t = 40 s (just before it starts to level off), determine at this instant (a) the horizontal distance it is from the airport, (b) its altitude, (c) its speed and (d) the magnitude of its acceleration.