1. MOMENTUM IS SACRED !!!!!!
If no external force, no change in momentum
2. 55 V1 + 75 V2 = 0
V1/V2 = - 75/55
3. m = 12
a = F/m = 24/12 = 2 m/s^2
I can not answer part 2 because I do not have the diagram. However I think your answer unlikely unless that rope pulls on ALL the blocks
1. Which of the following are conserved in a totally inelastic collision?
Only momentum
Only kinetic energy
Both momentum and kinetic energy
Neither momentum nor kinetic energy <---
It depends on the objects.
2. Two skaters stand face to face. Skater 1 has a mass of 55 kg, and skater 2 has a mass of 75 kg. They push off one another and move in opposite directions. What is the ratio of skater 1's speed to skater 2's speed?
1:1
55:75
55:130
75:55
Not enough information to tell <----
3.A massless string connects three blocks,2kg, 4kg, and 6kg, respectively. A force of 24 N acts on the system. What is the acceleration of the blocks and the tension in the rope attached to the 2 kg block?
4 m/s² 12 N
2 m/s² 4 N
2 m/s² 24 N <---
12 m/s² 2 N
4 m/s² 6 N
2 answers
Yes, the rope pulls all of the blocks to the right.
Thank you so much for your help.
Thank you so much for your help.
1 answer