gracemacias347 gracemacias347

13-11-2021
Physics

contestada

part 2 of 2
With what speed does the stone strike the
water?
Answer in units of m/s.

part 2 of 2 With what speed does the stone strike the water Answer in units of ms class=

Respuesta :

13-11-2021

Hi there!

We can begin by finding the final VERTICAL velocity of the ball.

Use the following kinematic equation: vf² = vi² + 2ad

The ball does not have any initial velocity in the vertical direction so:

vf² = 2ad

Plug in given values:

vf² = 2(9.81)(44) = 29.38 m/s

Find the TOTAL speed using the pythagorean theorem (involving both the horizontal velocity which remains the same and vertical velocity)

v = √(21²) + (29.38²) = 36.115 m/s

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