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Engineering Mechanics - Kinematics of Particle (KOP) - Discussion

Discussion Forum : Kinematics of Particle (KOP) - General Questions (Q.No. 14)
Kinematics of Particle (KOP)
14.

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.

v = 7.83 m/s, a = 2.27 m/s2
v = 9.74 m/s, a = 2.51 m/s2
v = 7.50 m/s, a = 2.25 m/s2
v = 5.26 m/s, a = 1.989 m/s2
Answer: Option
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