When your vehicle stops, you should be far enough away from the car in front of you that you can see where its tires make contact with the ground. any closer is too close. what is this known as?

a
safe lane changing

b
the stopping distance rule

c
the right-of-way

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?