Asked by Sue
A 3 kg block is released from rest at the top of a 20 m long frictionless ramp that is 5 m high.
Find the values for the block just before it reaches ground level.
(a) gravitational potential energy
----J
(b) kinetic energy
----J
(c) speed
-----m/s
(d) momentum
------kg·m/s
Find the values for the block just before it reaches ground level.
(a) gravitational potential energy
----J
(b) kinetic energy
----J
(c) speed
-----m/s
(d) momentum
------kg·m/s
Answers
Answered by
Damon
(a) m g h = 3 g (5) =15g at top
BUT I assume you are choosing it to be ZERO at the bottom
(b) (1/2)m v^2 = mgh = 15 g of course
(c) v = sqrt (2 g h)
v = sqrt(10 g)
(c)
BUT I assume you are choosing it to be ZERO at the bottom
(b) (1/2)m v^2 = mgh = 15 g of course
(c) v = sqrt (2 g h)
v = sqrt(10 g)
(c)
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