The triple jump is a track-and-field event in which an athlete gets a running start and tries to leap as far as he can with a hop, step, and jump. Shown in the figure is the initial hop of the athlete. Assuming that he approaches the takeoff line from the left with a horizontal velocity of 10 m/s, remains in contact with the ground for 0.18 s, and takes off at a 52° angle with a velocity of 12.4 m/s, determine the vertical component of the average impulsive force exerted by the ground on his foot. Give your answer in terms of the weight W of the athlete.

The triple jump is a track-and-field event in which an athlete gets a running start and tries to leap as far as he can with a hop, step, and jump. Shown in the figure is the initial hop of the athlete. Assuming that he approaches the takeoff line from the left with a horizontal velocity of 10 m/s, remains in contact with the ground for 0.18 s, and takes off at a 52° angle with a velocity of 12.4 m/s, determine the vertical component of the average impulsive force exerted by the ground on his foot. Give your answer in terms of the weight W of the athlete.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

applied mechanics 2
In order to avoid the extra energy and time required in starting and stopping, whenever possible trains are loaded through a vertical chute which drops heavy loads directly into the moving train car beneath. The modern average locomotive and a single empty train car have a mass of approximately 23000 kg. If the train passes beneath shoot with a velocity of 6 meters per second when a 5200 kg load of gravel and stone is dropped into the empty train car beneath determine b) the final velocity of the train after the load has been delivered. 5 pts Question 15
A basketball player shoots when she is 16 ft from the backboard. Given the ball has an initial velocity v0 at an angle of 30° with the horizontal. Determine the value of v0 when d is equal to 33 in.
A stone is dropped from a balloon which rises vertically at a constant rate for 4 seconds from the ground. The stone reaches the ground in 10 seconds. Determine the velocity of the balloon when the stone is dropped.
A ball is thrown vertically upward from the top of a 30-m high building with an initial velocity of 98 m/s. At the same instant, another ball is thrown upward from the top of another 25-m high building with an initial velocity of 196 m/s. Determine the height from the ground and the time at which they pass. Illustrate the problem.
In order to avoid the extra energy and time required in starting and stopping, whenever possible trains are loaded through a vertical chute which drops heavy loads directly into the moving train car beneath. The modern average locomotive and a single empty train car have a mass of approximately 23000 kg. If the train passes beneath shoot with a velocity of 6 meters per second when a 5200 kg load of gravel and stone is dropped into the empty train car beneath determine b) the final velocity of the train after the load has been delivered. Antak
A gas cylinder sliding off the ramp as shown in Figure, with a horizontal velocity of 46 m/s. If the height of the ramp is h =27 m from the floor, determine the time needed for the object to strike the floor and the range R where bags begin to pile up. "u" m/s C "R" m. "h" m.
A basketball is thrown into the basket from a height of 1.6 ft at horizontal distance from the basket of 37ft. the launch angle measured from the horizontal is 38 degrees, and the basket has a height of 10 feet. Determine the time in seconds it takes to reach the basket.
Freight car A with a gross weight of 138000 lb is moving along the horizontal track in a switching yard at 3.0 mi/hr. Freight car B with a gross weight of 166000 lb and moving at 3.9 mi/hr overtakes car A and is coupled to it. Determine (a) the common velocity V of the two cars as they move together after being coupled and (b) the loss of energy |AE| due to the impact. 3.9 mi/hr Answers: (a) V = B i (b) |AE| = i 3.0 mi/hr mi/hr ft-lb