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course Phy 201

9/23 441

An airplane on a runway has velocity 10 m/s at clock time t = 8 sec and velocity 20.5 m/s at clock time t = 15 s. Find its average velocity and its average acceleration during this time interval, and determine whether the acceleration might be uniform, if the distances from a certain roadkill on the runway are 93 meters and 132 meters at the respective clock times.Vave = ds/dt

Ds = 132cm - 93 cm = 39 cm

Vave = 39cm / (15s-8s) = 39cm/ 7s = 5.6 m/s

aAve = dv / dt

aAve = 10.5/ 7 = 1.5 m/s^2

&#Very good work. Let me know if you have questions. &#