Suppose a car can accelerate at 1m/s2. How large a break in traffic is needed to enter a highway where cars?

Vivian C asked: Suppose a car can accelerate at 1m/s2. How large a break in traffic is needed to enter a highway where cars are moving a 20m/s if the drive wants to avoid forcing the next car to slow down or to approach closer than 25m?

How do you get a motorcycle home from a dealership if a beginner?

clspon asked: I just got a motorcycle license and am going to buy a motorcycle from a dealership that is relatively far. I am not confident if I can ride on freeways and busy traffic.