jensenadam1417 jensenadam1417

01-09-2017
Physics

contestada

Jumps at 8 m/s at a 30 degree angle above the horizontal. how long was she in the air?

Respuesta :

01-09-2017

vo = 8 m/s. g = 10 m/s^2
alpha = 30 degree
ask: x?

x = vo^2 sin ^2 alpha / g
x = 8 ^2 x 2 sin 30 cos 30 / 10
x =( 64 x2x 1/2x1/2√3 )/ 10
x= 3.2 √3 metres

√3 = 1.73

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