A100-kg athlete is performing a vertical leap to test his leg strength. he leaves the ground at 3.20 m/s, zooms upward to some maximum altitude, and then returns to the ground. as he lands, he bends his legs and crouches down, so that he moves 30 cm downward as he comes to a stop. what average force did the athlete’s legs exert on the ground as he landed?

Which of the following are guidelines to follow for obtaining accurate observations

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

What would people living along the coast in south florida do if there was a hurricane warning? move to locations away from the water flock along coasts to watch the natural phenomenon buy instruments to predict the exact location of the hurricane measure water levels to know the exact time of the hurricane