friends please solve this question -
(1) A body starts moving in a straight line with initial velocity of 30 m/s and a retardation of 4 m/s acts on it. The distance travelled by the body in the 8th second is
I'll surely mark you as BRAINLIEST
Answers
Answer:
Explanation:
This is a interesting problem that helps the students to understand the difference between distance and displacement. In most cases the distance traveled between two times is just the difference in where you started and where you ended. If you changed directions during that time period, however, the distance traveled is larger than the displacement. If you were to graph out the position verses time and the velocity verses time for this problem, you will see that you do change directions for this problem and it happens during that 7 second to 8 second window. To find the full distance, you need to:
determine where the object is at 7 seconds,
determine where the object is when it hits the turning point (velocity is zero),
and then determine where the object is at 8 seconds.
The distance traveled will be the distance from the 7 second position to the turning point plus the distance from the turning point to the 8 second position.