If the entrance lane is too short to allow acceleration to highway speed, you should: stop and wait for a large space in traffic.
In mechanics, acceleration is the rate of change of an object's velocity with respect to time. Acceleration is a vector quantity (as long as it has magnitude and direction)[1][2]. The direction of an object's acceleration is given by the direction of the net force acting on that object. As described in Newton's second law [3], the magnitude of an object's acceleration is the combined effect of two sources. A linear increase in speed accelerates in the direction of travel. When the vehicle turns, it experiences acceleration in a new direction and changes its motion vector. Acceleration in the vehicle's current direction of travel is called linear (or tangential, in the case of circular motion) acceleration and the passenger perceives that response as pushing back into the seat. when turning
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