Recent content by razzmatazz

  1. R

    How Is the Average Force on a Shell Calculated Using the Work Energy Theorem?

    Homework Statement A weapon fired a 25.8-kg shell with a muzzle speed of 880 m/s. What averageforce acted on the shell?Homework Equations work energy theorem? The Attempt at a Solution Can someone please explain where the 6.00 comes from? Starting from rest, the shell acquired a kinetic...
  2. R

    Kinetic Energy/work finding the distance

    A 12 kg block is sliding to the left across the floor at a speed of 18 m/s. Opposing the motion is a 50 N force. How far (in m) will the object travel before its speed is reduced to 8 m/s? (a) 21.4 (b) 31.2 (c) 18.4 (d) 7.7 (e) none of these 2. Homework Equations...