A girl standing on a bridge throws a stone vertically downward with an initial velocity of 15.0 m/s into the river below. If the stone hits the water 2.00 seconds later, what is the height of the bridge above the water?

Remember to identify all your data, write the equation, and show your work.

Question

Thomas Boyer

Physics

13 April, 23:22

A girl standing on a bridge throws a stone vertically downward with an initial velocity of 15.0 m/s into the river below. If the stone hits the water 2.00 seconds later, what is the height of the bridge above the water?

Remember to identify all your data, write the equation, and show your work.

+3

Answers (1)

Know the Answer?

Tianna Bradley · Answer 1

Vi = 15 m/s

t = 2 s

a = 9.8 m/s^2

y = ?

The kinematic equation that has all of our variables is d = Vi*t + 0.5*a*t^2

y = 15*2 + 0.5*9.8*2^2 = 49.6 m

A girl standing on a bridge throws a stone vertically downward with an initial velocity of 15.0 m/s into the river below. If the stone hits the water 2.00 seconds later, what is the height of the bridge above the water?Remember to identify all your data, write the equation, and show your work.

A girl standing on a bridge throws a stone vertically downward with an initial velocity of 15.0 m/s into the river below. If the stone hits the water 2.00 seconds later, what is the height of the bridge above the water?

Remember to identify all your data, write the equation, and show your work.