Question
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.
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.
Answers
Scott
the distance equals the flight time multiplied by the horizontal component of the takeoff speed
t = 2 {[s * sin(27.1º)] / g}
d = t * [s * cos(27.1º)]
7.73 = 2 * s^2 * sin(27.1º / 2) / g
t = 2 {[s * sin(27.1º)] / g}
d = t * [s * cos(27.1º)]
7.73 = 2 * s^2 * sin(27.1º / 2) / g