Final answer:
When merging onto the interstate (freeway), you must accelerate to match the speed of the traffic already on the freeway.
Step-by-step explanation:
The correct answer is option Physics.
When merging onto the interstate (freeway), you must accelerate to match the speed of the traffic already on the freeway.
This ensures a smooth and safe merge. If you enter the freeway too slowly, you risk causing a potential collision with other vehicles.
However, it is important to note that you should always follow the posted speed limits and traffic laws while merging onto the freeway.
For example, if the speed limit on the freeway is 60 mph and the traffic is flowing at that speed, you should accelerate your vehicle to reach the same speed of 60 mph before merging into the flow of traffic.
This will help maintain the safety and efficiency of the overall traffic system.
The correct answer is option when merging onto the interstate (freeway), you must accelerate to match the speed of the traffic already on the interstate, often reaching highway speeds of 55 to 70 mph, depending on the speed limit and flow of traffic. The question involves the principles of physics, specifically kinematics, which is the study of motion without considering the forces that cause the motion.
Example 2.13 Calculation:
Suppose 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 can be found using the kinematic equation:
s = ut + (1/2)at2 where s is the displacement, u is the initial velocity, a is the acceleration, and t is the time.
For our scenario, the knowns are:
Initial velocity u = 10.0 m/s
Acceleration a = 2.00 m/s2
Displacement s = 200 m
The unknown is the time t. Rearranging the equation to solve for t, we can calculate the time required to merge onto the freeway.