3 m
M
m
M
before
after
A block of mass m= 5.9 kg slides from left to right across a frictionless surface with a speed Vi= 8.3 m/s. It collides with a block of mass Mthat is at rest. After the
collision, the 5.9-kg block reverses direction, and its new speed is vf=2.5 m/s. The block of mass M travels to the right at a speed 7 of 3.8 m/s. What is M?
O 7.9 kg
O 23 kg
O 12 kg
O 17 kg
O 9.3 kg

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!