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>
y approaches 5.
As x approaches infinity, -4^(-x) approaches 0.
0 + 5 = 5
Answer:
D
x=-4+2√2 or x=-4-2√2
Step-by-step explanation:
3(x+4)²-24
3(x+4)²=24
(x+4)²=24/3
(x+4)²=8
x+4=√8
x+4=±2√2
x=-4+2√2 or x=-4-2√2
Answer:
Slama paid $17.40
Step-by-step explanation:
70% off of $58 would be only $17.40 because $58 x .3 = $17.40
Answer:
1 ft³
Step-by-step explanation:
The formula for the volume of a cube is
Vol. = l³ = l × l × l
If l = 1 ft,
V = 1 ft × 1 ft × 1 ft
V = 1 ft³
