A 20 N stone is thrown vertically upward from the ground. It is observed that, when it is 15 m above the ground, it travels with a velocity of 25 m / s upwards. What will its speed be when it is thrown? A) 30.31 m/s B) 15.16 m/s C) 18.19 m/s D) 319 m/s
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A: Given:-
A 20 N stone is thrown vertically upward from the ground. It is observed that, when it is 15 m above the ground, it travels with a velocity of 25 m / s upwards. What will its speed be when it is thrown?
A) 30.31 m/s
B) 15.16 m/s
C) 18.19 m/s
D) 319 m/s
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