Answer:
A and B
Step-by-step explanation:
Maximum height of wheel=55 yards
Minimum height of wheel=5 yards
Diameter of wheel=Maximum height-minimum height
Diameter of wheel=55-5=50 yards
Radius of wheel=![\frac{diameter}{2}=\frac{50}{2}=25 yards](https://tex.z-dn.net/?f=%5Cfrac%7Bdiameter%7D%7B2%7D%3D%5Cfrac%7B50%7D%7B2%7D%3D25%20yards)
Maximum height of wheel at t=3 s
Again, maximum height of wheel at t=15 s
The car makes complete revolution in 15-3=12 s
Hence, option A and B are true.
Option D is false because at t=0 s the people are not locates at lowest height of Ferris wheel.