An Osprey can fly horizontally (not diving) at a maximum speed of 70.0 km/hr. The bird takes off from rest at the edge of a cliff, heading east, and accelerates at a rate of 1.21 m/s2. The osprey can decelerate at higher rate of 2.43 m/s2. The Osprey can reach top speeds of about 84 mph. When doing so, it does not flap its wings. Rather, it relies on its gravitational force to accelerate it downwards. a. Assuming that it starts from rest, and assuming that drag forces are slim, how long will it take for the osprey to reach its top speed? b. How far does it travel during this time? c. Near the top speed, drag forces become important, and in fact the terminal velocity is determined by the drag force. Assuming that the osprey's body can be modeled as a cylinder, with its cross-sectional area equal to that of a circle with radius of 10 cm, what is the coefficient of drag C for a hawk?

A student walks off the top of the CN Tower in Toronto, which has height 553 mm and falls freely. His initial velocity is zero. The Rocketeer arrives at the scene a time of 5.50 ss later and dives off the top of the tower to save the student. The Rocketeer leaves the roof with an initial downward speed v0v0. In order both to catch the student and to prevent injury to him, the Rocketeer should catch the student at a sufficiently great height above ground so that the Rocketeer and the student slow down and arrive at the ground with zero velocity. The upward acceleration that accomplishes this is provided by the Rocketeer's jet pack, which he turns on just as he catches the student; before then the Rocketeer is in free fall. To prevent discomfort to the student, the magnitude of the acceleration of the Rocketeer and the student as they move downward together should be no more than five times gg. 1)What is the minimum height above the ground at which the Rocketeer should catch the student?…

Two friends are tossing balls from the main floor of the auditorium to the balcony. One person stands exactly 4.0 m above the other person, and both release and catch the balls at the same height above their feet. The balls are always caught on their way down. The boy on the main floor releases his ball with an initial velocity of 25 m/s [up]. With what velocity should the girl on the balcony throw her ball at the same moment, so that both balls will be caught by the other person at exactly the same time

Two trains, each having a speed of 30 km/h, are headed at each other on the same straight track. A bird that can fly 60 km/h flies off the front of one train when they are 60 km apart and heads directly for the other train. On reaching the other train, the (crazy) bird flies directly back to the first train, and so forth.What is the total distance the bird travels before the trains collide?

Chapter 2- questn-39 A ball is thrown from the ground at a speed of 15 m / s, while another ball starts free fall from 35 meters at the same time. When they meet at the same height. Option 1 Option 2 Option 3 Option 4 Option 5 2.3 s 2.5 s 2.7 s 2.9 s 3.2 s

Lisa in her Lamborghini accelerates at the rate of (2.20î - 2.20ĵ) m/s², while Jill in her Jaguar accelerates at (3.00 +2.00ĵ) m/s². They both start from rest at the origin of an xy coordinate system. After 5.00 s, find the following. (a) What is Lisa's speed with respect to Jill? m/s (b) How far apart are they? m (c) What is Lisa's acceleration relative to Jill? a = m/s²

A typical jetliner lands at a speed of 160 mi/h and decelerates at the rate of (10.0 mi/h)/s. If the plane travels at a constant speed of 160 mi/h 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?

A race car moves such that its position fits the relationship x = (6.0 m/s)t + (0.80 m/s3)t3 where x is measured in meters and t in seconds. (a) A plot of the car's position versus time is which of the following? (b) Determine the instantaneous velocity of the car at t = 3.7 s, using time intervals of 0.40 s, 0.20 s, and 0.10 s. (In order to better see the limiting process keep at least three decimal places in your answer.) (c) Compare the average velocity during the first 3.7 s with the results of part (b). The average velocity of m/s is  ---Select--- much less than about the same as much greater than the instantaneous velocity

Two students are on a balcony 19.5 m above the street. One student throws a ball vertically downward at 16.6 m/s; at the same instant the other student throws a ball vertically upward at the same speed. The second ball just misses the balcony on the way down.  (a) What is the difference in their time in air? (b) What is the velocity of each ball as it strikes the ground?  (c) How far apart are the balls 0.900 s after they are thrown?