Exercise 1:
On April 15, 1912, the luxury cruiseliner Titanic sank after running into an
iceberg. a) What momentum would the 4.23 X 10%-kg ship have imparted to
the iceberg if it had hit the iceberg head-on with a speed of 11.6 m/s? (Actually,
the impact was a glancing blow.) b) If the captain of the ship had seen the
iceberg a kilometer ahead and had tried to slow down, why would this have
been a futile effort? (Read more about the Titanic at http://www. titanic. com)
a.
b.

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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?