1. 1. A 1.20 kg pendulum bob is raised 0.340 mabove its lowest point and release

Question

1.    1. A 1.20 kg pendulum bob is raised 0.340 mabove its lowest point and released. At the lowest point inits swing it strikes a 2.60 kg block initially at rest.
a)    What is the gravitational potential energy ofthe pendulum bob initially.
b)    What is the speed of the pendulum bob justbefore striking the block?
c)    If the pendulum bounces back with a speed of0.800 m/s, what is the speed of the block after the collision?
d)   Is the collision elastic? Explain youranswer.
e)   Shortly after the collision, the blockencounters a surface with a coefficient of kinetic friction of0.250. How far does it slide on that surface before coming toa stop?

Any help will be greatly appreciated!!!!

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can anybody get me started on this?

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