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23 Nov 2019
A cannon on a railroad car is facing in a direction parallel to the tracks. It fires a 97 kg shell at a speed of 105 m/s (relative to the ground) at an angle of 60.0° above the horizontal. If the cannon plus car have a mass of 5.4 multiplied by 104 kg, what is the recoil speed of the car if it was at rest before the cannon was fired? [Hint: A component of a system's momentum along an axis is conserved if the net external force acting on the system has no component along that axis.]
A cannon on a railroad car is facing in a direction parallel to the tracks. It fires a 97 kg shell at a speed of 105 m/s (relative to the ground) at an angle of 60.0° above the horizontal. If the cannon plus car have a mass of 5.4 multiplied by 104 kg, what is the recoil speed of the car if it was at rest before the cannon was fired? [Hint: A component of a system's momentum along an axis is conserved if the net external force acting on the system has no component along that axis.]
30 Jun 2023
