Name: _____________________________ Velocity Practice Problems Solve the following problems relating to velocity using the following formula. Show your work and include the correct unit. Distance (m), time (s), velocity (m/s). Average Velocity/Speed = Total Distance / Total Time v = d/t Ex. 1.) This skier traverses the 200 m width of an alpine glacier in 12 s. Calculate their average velocity. v = d/t v = 200 / 12 v = 16.7 m/s Ex. 2.) How long will it take Ex. 3.) this swimmer to swim a 50 m Formula 1 race traveling at 2.3 m/s? cars c an move at over 200 mph (~90 m/s). How much distance could one cover moving at 90 m/s for 30 s? v = d/t 2.3 = 50 / t v = d/t (t) (t) 90 = d/30 2.3t = 50 (30) (30) /2.3 /2.3 d = 2,700 m or 2.7 km t = 21.7 s 1.) This runner averages 1 mile (1,609 m) in 7 minutes. Calculate her velocity in m/s. 2.) This battle robot’s top speed is 0.3 m/s. How long will it take it to walk 12 m? 3.) How high will this RC helicopter go in 8 seconds with an average vertical speed of 3.4 m/s? 4.) A sloth can move at 0.15 mph (0.07 m/s) when moving at top speed. How long would it take a sloth to “run” a 100 m dash? 5.) How far could this dinosaur travel in 20 seconds if its average velocity is 4.7 m/s? 6.) Mike the mic can run 10 m in 7.4 seconds. Calculate Mike’s velocity. Copyright 2017 - Mr. Fry’s Physical Science ANSWER KEY Ex. 1.) This skier traverses the 200 m width of an alpine glacier in 12 s. Calculate their average velocity. v = d/t v = 200 / 12 v = 16.7 m/s Ex. 2.) How long will it take Ex. 3.) this swimmer to swim a 50 m Formula 1 race traveling at 2.3 m/s? cars c an move at over 200 mph (~90 m/s). How much distance could one cover moving at 90 m/s for 30 s? v = d/t 2.3 = 50 / t v = d/t (t) (t) 90 = d/30 2.3t = 50 (30) (30) /2.3 /2.3 d = 2,700 m or 2.7 km t = 21.7 s 1.) This runner averages 1 mile (1,609 m) in 7 minutes. Calculate her velocity in m/s. 2.) This battle robot’s top speed is 0.3 m/s. How long will it take it to walk 12 m? 3.) How high will this RC helicopter go in 8 seconds with an average vertical speed of 3.4 m/s? 7 min x 60 s/min = 420 s v = d/t v = 1,609/420 s v = 3.83 m/s v = d/t 0.3 = 12 / t (t) (t) 0.3t = 12 /0.3 /0.3 t = 40 s 4.) A sloth can move at 0.15 mph (0.07 m/s) when moving at top speed. How long would it take a sloth to “run” a 100 m dash? 5.) How far could this dinosaur travel in 20 seconds if its average velocity is 4.7 m/s? 6.) Mike the mic can run 10 m in 7.4 seconds. Calculate Mike’s velocity. v = d/t 0.07 = 100 / t (t) (t) 0.07t = 100 /0.07 /0.07 t = 1,428 s or 23.8 min v = d/t 4.7 = d / 20 (20) (20) d = 94 m v = d/t v = 10 / 7.4 v = 1.35 m/s v = d/t 3.4 = d / 8 (8) (8) d = 27.2 m Copyright 2017 - Mr. Fry’s Physical Science