An athlete performing a long jump leaves the ground at a 27.1 ∘ angle and lands 7.73 m away.
1). What was the takeoff speed?
Express your answer using three significant figures and include the appropriate units.
2).If this speed were increased by just 3.0%, how much longer would the jump be?
Express your answer using two significant figures and include the appropriate units.
see earlier postposted by Scott
1. Range = Vo^2 * sin(2A)/g.
7.73 = Vo^2 * sin(54.2)/9.8.
7.73 = Vo^2 * 0.0828, Vo^2 = 93.4, Vo = 9.66 m/s.
Range = (9.66*1.03)^2 * sin(54.2)/9.8 =
posted by Henry