A 10-kg toy truck moves at 5 m/s East. It collides head-on with a 5-kg toy car moving at 10 m/s, West. What is the total momentum of the
system?

0 kg m/s
50 kg m/s
30 kg m/s
10 kg m/s

0 kg m/s

Hope this helped :)

What is on your multiple choice anwers

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.