Truvia is running. Their velocity as a function of time is show below. Use the graph to calculate the acceleration of Truvia from t = 13 s to t = 18 s

50 inches should be the resultant vector

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

a skateboard rolling across the street - apex

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me