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
Two steel blocks slide without friction on a horizontal surface. Their velocities before the impact are shown. Knowing that e = 0.75, determine their velocities after impact.
Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Packages are thrown down an incline at A with a velocity of 2.5 m/s. The packages slide along the surface ABC to a conveyor belt which moves with a velocity of 2 m/s. The distance d= 7.5 m and μk = 0.25 between the packages and all surfaces. 2 m/s 7 m B 30° JAM'S Determine the speed of the package at C. (You must provide an answer before moving to the next part.) m/s. The speed of the package at Cis
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
Q1) The shooter in position A throws a ball when the receiver is at the position B, as shown in Figure (1). The receiver's velocity is constant at 5 m/sec, and he catches passes when the ball is 2 m above the ground. If the shooter desires the receiver to catch the ball at 55 m away from point A, determine the required initial speed vo and angle 0, to achieve that. 2.5 m U= 5m/sec 30 m Finure t
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.
3. A ball is thrown so that it just clears a 10 ft fence 60 feet away. If the ball If the ball left the hand 5 ft. above the ground at an angle of 60° to the horizontal, what was the initial velocity of the ball?
P2. A ball is kicked from the origin with an initial speed of v1, = 25.0 m/s, at an angle 0 with the horizontal. At the same time, a second ball is thrown vertically upward from the ground at point P, at x, = 40.0 m with an initial speed of v, = 15.0 m/s as shown in the figure below. Assume that both balls are shot at time t= 0 a) If the two balls are to hit each other, what must 0 be? b) At what time the two balls will hit each other? y 40 m
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.
please answer in 20 minutes thank you! A 0.4 kg rubber ball has a horizontal velocity of 1.554 m/s at point A and goes through a projectile motion until it hits a smooth floor at point B. It then bounces off and reaches another peak in its trajectory at point C. The ball hits the smooth floor with an impact which has a coefficient of restitution of 0.8 in a very short span of time. Which of the following best approximates the speed of the ball just after it bounces off the floor for the first time? Which of the following best approximates the value of DISTANCE h?
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.