Answer:
C is wrong, the correct answer is D
Explanation:
I just took the test
-2 kg x m/s
-17 + 54 = 35 + x
x = -2
D
15m/ s
i hope this helps
besides a reduction in friction, the only way to increase the amount of work output of a machine is to Increase the work input
i
Answer: 4m/s