D dodgers!!!! New member Sep 25, 2009 #1 A boy sledding down a hill accelerates at 1.40 m/s^2. If he started from rest, in what distance would he reach a speed of 7.00 m/s
A boy sledding down a hill accelerates at 1.40 m/s^2. If he started from rest, in what distance would he reach a speed of 7.00 m/s
M Marcus New member Sep 25, 2009 #2 Since the acceleration doesn't change, the average speed is (vend+v0)/2=3.5m/s and t is (7 m/s)/(1.4m/s^2)=5s so the distance is 3.5m/s*5s=17.5m
Since the acceleration doesn't change, the average speed is (vend+v0)/2=3.5m/s and t is (7 m/s)/(1.4m/s^2)=5s so the distance is 3.5m/s*5s=17.5m
