A rock is thrown vertically upward with a velocity of \( 20 \, \text{m/s} \) from the edge of a bridge \( 42 \, \text{m} \) above a river.(a) What is the rock’s speed just before it falls into the river? , (b) How much time does it take from the time the rock is launched to the time when the rock strikes the river water? :

A rock is thrown vertically upward with a velocity of \( 20 \, \text{m/s} \) from the edge of a bridge \( 42 \, \text{m} \) above a river. • Nerd Notes

AP Physics 1

1.2 Displacement, Velocity, and Acceleration

BeginnerFRQMathematical17.8k

A rock is thrown vertically upward with a velocity of \( 20 \, \text{m/s} \) from the edge of a bridge \( 42 \, \text{m} \) above a river.

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