Final answer:
A driver should safely merge with freeway traffic when entering from an on-ramp, involving acceleration and timing to join the traffic flow.
Step-by-step explanation:
When entering the freeway from a ramp, a driver should merge safely with the flow of traffic. This involves accelerating to match the speed of the vehicles on the freeway, using mirrors and turn signals to indicate intention, and looking for an appropriate gap in traffic to merge into. For example, given a car merges into freeway traffic on a 200-m-long ramp with an initial velocity of 10.0 m/s and an acceleration of 2.00 m/s², the time it takes to travel the 200 m up the ramp must be calculated, which may be useful to traffic engineers. In cases where equations involve an unknown squared, there are typically two solutions, but only the reasonable solution should be used, such as the 10.0 s answer that seems typical for a freeway on-ramp acceleration scenario.