Answer:
K=5
Step-by-step explanation:
Yo sup??
From Newton's 2nd law of motion
F*t=Δp
=mv-mu
mu=0.4*15
=6
t=0.2
mv=0
Therefore
F*0.2=6
F=30 N
Hope this helps.
x=0 or x=-2 or x=2
Check attached image below
Ed is 13 Ted is 6
Dont guess think
The area of the figure is 84
