PleaseHelpMe2824 PleaseHelpMe2824

31-10-2017
Physics

contestada

You throw a ball upward from a window at a speed of 1.5 m/s. how fast will it be moving when it hits the sidewalk 2.6 m below?

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kritter1 kritter1

04-11-2017

List out all your variables;

Initial Velocity (u)= 1.5 ms⁻¹
Final Velocity (v)=?
Acceleration=9.8 ms⁻¹ (remains constant on free fall problems)
Displacement (s)=-2.6 m

v²=u²+2as
v²=(1.5)²+2(-9.8)(-2.6)
v²=53.21
v=√53.21
v= 7.2945 ≈ 7.3 ms⁻¹

Hope I helped :)

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