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Question1
A 1200-kg automobile travels at a speed of 12 m/s.
(a) what is it the kinetic energy?
(b) What is work that would be required to bring it to a stop?
(c) If the force that causes it to stop is a constant 1250 N, how far before it stops?
Question2
A 0.500-kg ball is thrown vertically upward with an initial speed of 10.0 m/s. If initial potential energy is taken as zero, find balls-
a) Kinetic energy 1.00 m above initial position
b) potential energy 1.00 m above initial position
c) mechanical energy 1.00 above initial position
Determine the tension in each string
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