Relative speed of Tina with respect to David is given by



now the acceleration of Tina with respect to David



now the relative displacement would be zero when Tina cross David
so now we have



now the speed of Tina at this moment is given as



<em>so the speed will be 52 m/s</em>
Displacement equals the original velocity multiplied by time plus one half the acceleration multiplied by the square of time. Here is a sample problem and its solution showing the use of this equation: An object is moving with a velocity of 5.0 m/s.. Displacement = (final position) - (initial position) = change in position.
question answered by
(jacemorris04)
Answer:
work = 500*3 = 1500 J
1500J in 5 sec = 300 watts
Explanation:
answer look it up
Explanation:https://www.chegg.com/homework-help/questions-and-answers/takes-planet-28-years-orbit-sun-long-years-take-planet-go-way-around-sky-q29849397