(II) A rocket rises vertically, from rest, with an acceleration of 3.2m/s2 until it runs out of fuel at an altitude of 775 m. After this point, its acceleration is that of gravity, downward. (a) What is the velocity of the rocket when itruns out of fuel? (b) How long does it take to reach this point? (c) What maximum altitude does the rocket reach?(d) How much time (total) does it take to reachmaximum altitude? (e) With what velocity does it strikethe Earth? (f) How long (total) is it in the air?

(II) A baseball is hit with a speed of  27.0 m/s at an angle of 45.0°. It lands on the flat roof of a 13.0-m-tall nearby building. If the ball was hit when it was 1.0 m above the ground, what horizontal distance does it travel before it lands on the building?

(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.

(8) Please don't write on a paper. I can't understand handwritten. A toy giraffe was thrown horizontally from the edge of the table at a velocity of 7.5 m/s. If the table is 1.25 m high, what is the toy's velocity just before it hits the ground?

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,

69) A rescue helicopter is hovering over a person whose boat has sunk. One of the rescuers throws a life preserver straight down to the victim with an initial velocity of 1.40 m/s and observes that it takes 1.8 s to reach the water. (a) List the knowns in this problem. (b) How high above the water was the preserver released? Note that the downdraft of the helicopter reduces the effects of air resistance on the falling life preserver, so that an acceleration equal to that of gravity is reasonable.