Answer:
The x-intercept is 2.
Step-by-step explanation:
When the car is moving, it has Kinetic Energy. As soon as the car entercount with the spring, its Kinetic Energy will transfer to Elastic Potential Energy.
<span>KE = EPE </span>
<span>1/2mv^2 = 1/2kx^2 </span>
<span>change the speed into m/s </span>
<span>50 km/hr = 13.9 m/s </span>
<span>1/2(1200)(13.9)^2 = 1/2k(2.2)^2 </span>
<span>now you do the math to solve for k.
k= 115926/2.42
K= 47903.30</span>
16 bc one side is 5ft so the other must be 3 to have an area of 15. Then 5+5+3+3= 16ft
I think it’s B but I’m not sure. It seems (most likely) to be newspaper