The mirror formula for curved mirrors is:
where
f is the focal length of the mirror
is the distance of the object from the mirror
is the distance of the image from the mirror
The sign convention that should be used in order to find the correct values is the following:

: positive if the mirror is concave, negative if the mirror is convex

: positive if the image is real (located on the same side of the object), negative if it is virtual (located on the opposite side of the mirror)
Answer:
None of these is correct.
Explanation:
The average speed can be derived from the sum of the total distance traveled and the total time taken.
Total distance = 4.9 + 1.9 = 6.8
Total time taken = 33 + 39 = 72
So;
Average speed = = = 0.014
None of the answer choices given is correct.
Answer:
upper part second pic
Explanation:
if you observe the trend it increases with each lap and the guy increases the distance he has covered with each lap so distance increases with time
D as that's the only negative shown out of those choices.
Answer:
An object in motion will stay in motion until an outside force is acted upon it.An object at rest will stay at rest until an outside force acts upon it.
Explanation: