Is it safe to use zero for the initial velocity in equations

Reference no: EM13283411

When approaching a problem such as this:
If an astronaut can throw a certain wrench 15.0m vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed in both places?
Is it safe to use zero for the initial velocity in equations?

Reference no: EM13283411

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