bike midway between Rands, when it moving along a straight road with a uniform acceleration.
It passes through two points
R ands, separated by a distance
with
velocity 30 km/h and 40 km/h
1
Expert's answer
2021-08-25T17:24:17-0400
Let the distance between two points be d, then the distance from the initial location to the midpoint is d/2. Let also vi=30km/h and vf=40km/h be the initial and final speeds respectively.
According to the kinematic equation (see https://www.physicsclassroom.com/class/1DKin/Lesson-6/Kinematic-Equations), the acceleration of such motion is given as follows:
vf2=vi2+2ada=2dvf2−vi2
Using the same equation but this time for the midpoint, obtain the velocity at this point:
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