200000J/200KJ
Step-by-step explanation:
using k.e=1/2(mv2)
k.e=1×1000×20²/2
k.e=400000/2
k.e=200000J/200KJ
Answer:
20
5x^3 -3x^2 +8x +10 Combine all the like terms and multiply everything in the second parentheses by -1
I hope this help's you :)