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MU Unit 06 Momentum L Exam
A child is on a sled moving down a hill at 10 m/s. The combined mass of the sled and child is 100 kilograms. The momentum of the child and sled is
20 kg-m/s
2000 kg-m/s
1000 kg-m/s
5 kg•m's

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?