# Hey! can someone please help me solve these 2 questions.. i m stuck.. thanks a lot in advance?

1) a 50 g rock is thrown with a velocity of 15 m/s [50 deg from the horizontal] fro the top of a 10 m tower.
a) calc. the speed when the rock is at the max. height.
b) calc. the max. height.
c) calc the velocity when the rock reaches the ground.
2) a 3 kg ball is dropped from the eight of 0.80 m above the top of a...
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1) a 50 g rock is thrown with a velocity of 15 m/s [50 deg from the horizontal] fro the top of a 10 m tower.

a) calc. the speed when the rock is at the max. height.

b) calc. the max. height.

c) calc the velocity when the rock reaches the ground.

2) a 3 kg ball is dropped from the eight of 0.80 m above the top of a vertical spring of force constant 1200 N/m. what is the max compression of the spring?

a) calc. the speed when the rock is at the max. height.

b) calc. the max. height.

c) calc the velocity when the rock reaches the ground.

2) a 3 kg ball is dropped from the eight of 0.80 m above the top of a vertical spring of force constant 1200 N/m. what is the max compression of the spring?

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