Question

Chapter4, Question 2- A commercial jet flies at 550 mi/h for 3000 mi. For how much time does the jet fly? Question 4, A glider flies south east (at 320.0 degrees) at 25.0 Km/h. a wind blows at 12.0 Km/h from 15.0 degrees south of west. What is the new velocity of the glider with respect to the ground in standard position? Question 6- A race car goes from rest to 150 Km/h with an acceleration of 6.0 m/s squared. How many seconds does it take?. Question8- A skateboard starts from rest and accelerates at a rate of 1.30 m/s squared for 3.00s What is his final velocity? Question 10 A train has a final final velocity of 110 Km/h . It accelerated for 36 s at 0.50 m/s squared. What was its initial velocity? Question 12-A truck accelerates from rest to 120Km/h in 13 s. Find its acceleration. Question 16- A rock is thrown down with an initial speed of 10.0 m/s from a bridge to the water below. It takes 2.75 s for the rock to hit the water. (a) Find the speed of the rock as it hits the water. (b) How high is the bridge above the water?

Answer 1