79. •Sports Gabriele Reinsch threw a discus 76.80 m on July 9, 1988, to set the women's world record. Assume that she launched the discus with an elevation angle of 45°, and that her hand was 2.0 m over the ground at the instant of launch. What is the initial speed of the discus required to achieve that range? (Neglect any effects due to air resistance.) SSM
79. •Sports Gabriele Reinsch threw a discus 76.80 m on July 9, 1988, to set the women's world record. Assume that she launched the discus with an elevation angle of 45°, and that her hand was 2.0 m over the ground at the instant of launch. What is the initial speed of the discus required to achieve that range? (Neglect any effects due to air resistance.) SSM
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Transcribed Image Text:79. •Sports Gabriele Reinsch threw a discus 76.80 m on
July 9, 1988, to set the women's world record. Assume
that she launched the discus with an elevation angle of
45°, and that her hand was 2.0 m over the ground at the
instant of launch. What is the initial speed of the discus
required to achieve that range? (Neglect any effects due
to air resistance.) SSM
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In a projectile motion the velocity fo ground hitting is equal to the initial velocity of the projectile.
Angle at which the object hits the ground is same as the angel of projection.
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