Suppose a 1300 kg car is traveling around a circular curve in a road at a constant 9.0 m/sec. If the curve in the road has a radius of 25 m, then what is
the magnitude of the unbalanced force that steers the car out of its natural
straight-line path?

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

gravity

explanation: