Applied Mechanics and Graphic Statics
The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

12.88 m/sec
5.88 m/sec
10.88 m/sec
8.88 m/sec

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Applied Mechanics and Graphic Statics
A ball which is thrown upwards, returns to the ground describing a parabolic path during its flight

Horizontal component of velocity remains constant
Vertical component of velocity remains constant
Kinetic energy of the ball remains constant
Speed of the ball remains constant

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