Answer:
v = 339,3 in/sec
Step-by-step explanation:
The wheels are moving at a rate of 6 rps (revolutions per second), and the length of the wheel is (L) is
L = 2*π*r where r is a radius of the wheel
L = 2*π*9 (in)
L = 56,55 ( in)
L will be the traveled length by car in each turn of the wheel
Since the wheel has a rate of 6 turns by second, then we need to multiply de numbers of turns by second times, the traveled length in 1 turn, in order to get the speed of the car
Then:
v ( speed of the car ) is:
v = 6 * 56,55 ( in/sec)
v = 339,3 in/sec