PHY - C of M
posted by Sarah on .
A 1100-kg cannon shoots a 31-kg shell at an angle of 25¡ above the horizontal and a speed of 520 m/s. What is the recoil velocity of the cannon? (Take the direction the cannon is firing to be the positive direction. Indicate the direction with the sign of your answer.)
Homework dumping with obvious name changes and no effort shown is frowned upon here.
This problem can be solved by assuming conservation of horizontal momemtum