Posted by Alex on Wednesday, December 2, 2009 at 1:12pm.
A car and a motorcycle start from rest at the same time on a straight section of the road. However, the motorcycle starts 29.6 m behind the car. The car accelerates at a uniform rate of 3.9 m/s^2 while the motorcycle accelerates at a constant rate of 4.2 m/s^2. How much time elapses until the motorcycle overtakes the car?

physics  bobpursley, Wednesday, December 2, 2009 at 1:31pm
They travel the same time, and 29.6m different in distance.
dm=1/2 am t^2
dc=1/2 ac t^2
subtract the second equation from the first
dmdc=1/2 (amac)t^2
29.6=1/2 (amac)t^2
solve for t.

physics  josh, Saturday, September 15, 2012 at 5:43pm
A car traveling at +7.8 m/s accelerates at the
rate of 0.65 m/s
2
for an interval of 1.6 s.
Find vf .
Answer in units of m/s

physics  Anonymous, Thursday, February 25, 2016 at 12:27pm
14.04
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