(II) Extreme-sports enthusiasts have been known to jump off the top of El Capitan, a sheer granite cliff of height 910 m in Yosemite National Park. Assume a jumper runs horizontally off the top of El Capitan with speed 4.0 m/s and enjoys a free fall until she is 150 m above the valley floor, at which time she opens her parachute (Fig. 3–37). (a) How long is the jumper in free fall? Ignore air resis- tance. (b) It is important to be as far away from the cliff as possible before opening the parachute. How far from the cliff is this jumper when she opens her chute? 4.0 m/s 910 m 150 m FIGURE 3-37 Problem 26.

A ball is thrown vertically upward with a speed of 12.0 m/s. (c) How long does the ball take to hit the ground after it reaches its highest point?

(II) Roger sees water balloons fall past his window. He notices that each balloon strikes the sidewalk 0.83 s after passing his window. Roger’s room is on the third floor, 15 m above the sidewalk. (a) How fast are the balloons traveling when they pass Roger’s window? (b) Assuming the  balloons are being released from rest, from what floor are they being released? Each floor of the dorm is 5.0 m high.

A locust jumps at an angle of 55.0 and lands 0.800 m from where it jumped. (a)What is the maximum height of the locust during its jump? Ignore air resistance andassume g = 9.8 m/s2 (b) If it jumps with the same initial speed at an angle of 45.0,would the maximum height be larger or smaller? (c) Calculate the maximum heightand range for this angle.

(b) If the jet touches down at position xi = 0, what is its final position? Home work: A typical jetliner lands at a speed of 71.5 m/s and decelerates at the rate of 4.47m/s². If the plane travels at a constant speed of 71.5 m/s for 1.00 s after landing before applying the brakes, what is the total displacement of the aircraft between touchdown on the runway and coming to rest ( stop )? Chapter 2 finished,

In the blizzard of ’88, a rancher was forced to drop hay bales from an airplane to feed her cattle. The plane flew horizontally at 160 km/hr and dropped the bales from a height of 80 m above the flat range, (a) She wanted the bales of hay to land 30 m behind the cattle so as to not hit them. Where should she push the bales out of the airplane? (b) To not hit the cattle, what is the largest time error she could make while pushing the bales out of the airplane? Ignore air resistance.

(10) Please don't write on a paper. I can't understand handwritten. A stone is thrown horizontally at a speed of 6.0 m/s from the top of a cliff that is 70.0 m high. How long does it take the stone to reach the bottom of the cliff?

In the standing Broadjump, one squats and then pushes off with the legs to see how far one can jump. Suppose the extension of the legs from the crouch position is 0.55 m and the acceleration achieved during the time the jumper is extending their legs is 1.2 time the acceleration due to gravity, g. How far can they jump in meters? Assume the person leaves at an angle of 45° and on level ground.

Help please A cargo helicopter, descending steadily at a speed of 3.8 m/s, releases a small package. Let upward be the positive direction for this problem. (I) If the package is 94 m above the ground when it is dropped, how long does it take for the package to reach the ground? (II) What is its velocity just before it lands? (Indicate the direction with the sign of your answer.)