A 1800-Kg Jeep Travels Along a Straight 500-M Portion of Highway

Multiple Choice

A 1800-kg Jeep travels along a straight 500-m portion of highway (from A to B) at a constant speed of 10 m/s. At B, the Jeep encounters an unbanked curve of radius 50 m. The Jeep follows the road from B to C traveling at a constant speed of 10 m/s while the direction of the Jeep changes from east to south.
-What is the magnitude of the frictional force between the tires and the road as the Jeep negotiates the curve from B to C?

A) 9600 N
B) 7200 N
C) 3600 N
D) 1800 N
E) 1000 N