Answer:
it takes the car 4.362 seconds to cover the distance of 88.4 m.
Explanation:
The distance the car covers is given by the function
,
where , and , putting these in we get:
Now, when the car has moved to 88.4m, , or
which is a quadratic equation with solutions
We take the first solution , <em>since at that time the car is still moving right and decelerating</em>. The second solution describes the situation where the car has stopped decelerating and is now moving leftwards because the decelerating is leftwards, <em>which is utterly wrong because we know that cars do not start moving backwards after the brakes have stopped them! </em>
Thus, it takes the car 4.362 seconds to cover the distance of 88.4 m.
Answer:
4.5 m/s
Explanation:
so, you just divide the displacement or distance (202.5) by the time given (45)
202.5 ÷ 45 =4.5
A. A long thin wire because it is thin and long is give the most resistance. That is why people who walk on a wire across buildings have long thin wires.
Explanation:
2) C would need the least effort, because the longer the effort distance, the least the effort applied.