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Find the verticle velocity by resolving the velocity vector:

Trigonometry: 50sin30 = 25m/s in upwards direction

Using SUVAT for the vertical direction: S=-10, U=25, A=-9.81, V=N/A, T=?:

The key to solving this is remembering that momentum is conserved. The large, initial particle has no speed so its momentum is zero. Therefore, if we add together the momenta of the final particles we als...

Newton's Third Law looks at what happens when two objects interact with each other. The definition of Newton's Third Law is, "When one body exerts a force on a second body, the second body simultaneo...

We need to calculate moments about a point through which one of the forces is acting. I choose the bank support point. At this point, 

moments are caused by the weight of the plank acting at its ce...

Acceleration is directly proportional to the displacement from the position of equilibrium. Also the resultant force is therefore also directly proportional to this displacement, and the resultant force a...