1. An object with a mass of m is thrown straight up near the surface of the earth. While the object is going up, the net force o
1 answer:
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Answer:
A) - 1.8 m/s
Explanation:
As we know that whole system is initially at rest and there is no external force on this system
So total momentum of the system must be conserved
so we will have
now plug in all data into above equation
so correct answer is
A) - 1.8 m/s