The engines of the rocket projected vertically up are on for 20 s, after which it still moves up, reaching the maximum height of 1.5 km.   a. What was the acceleration of the rocket when the engines were on? b. If the terrain is horizontal, what is the impact speed of the rocket? c. Graph v t.

A certain hawk can fly horizontally (i.e., not diving) at a maximum speed of 80.0 km/hr The hawk can decelerate at a much higher rate of 2.75 m/s2 . a. If initially flying at its top speed, how much time does it take for the hawk to come to a stop? b. How far does it travel during this time? c. If the hawk has a mass of 1.1 kg, what is the average force that must be applied by its wings in order to come to a stop?

2. The rocket starts from rest to and travels straight up. Its . C. height above the ground can be approsimated by the functions S = bt+ct*where "b" and "e are constants. At t-10 seconds, the rockets velocity and acceleration are v229 m/s and an28.2 m/s. a Determine the value of S at t-5 seconds b. Determine the value of its velocity at t-5 seconds Determine the value of its acceleration at t-5 seconds

A javelin thrower standing at rest holds the center of the javelin behind her head, then accelerates it through a distance of 70cm as she throws. She releases the javelin 2.0m above the ground traveling at an angle of 30° above the horizontal. In this throw, the javelin hits the ground 62m away. a. What was the acceleration of the javelin during the throw? Assume that it has a constant acceleration. b. What is the speed of the javelin as it leaves the hand of the thrower? c. What is the maximum height reached by the javelin? O 10.5m 9.8m O 8.5m O 7.0m