Physics
isabellasanchez
26

Formula: acceleration= velocity final-velocity initial/time 1- An airplane starts at rest and accelerates down the runway for 20 s. At the end of the runway, its velocity is 80 m/s north. What is its acceleration? 2- A cyclist starts at rest and accelerates at 0.5 m/s^2 south for 20 s. What is the cyclist's final velocity?

+2
(1) Answers
karla519

According to the formula you have given us to work with . . . 1). The airplane's acceleration is (80 m/s north - zero) / (20 sec) = 4 m/sec^2 north 2).  For the cyclist:                                           (V-final - zero) / 20sec = 0.5 m/s^2 south Multiply each side by 20s :  V-final = 0.5 m/s^2 south x (20sec) =                                                                                           10 m/s south

Add answer