Answer:
Option (c) : +f
Explanation:
Sign convention is based on cartesian system with Optical Centre as vertex, therefore, focal length of a convex mirror is +ive.
Answer:
Work is said to be done when there is change in the position of the object due to the force applied on it.
Explanation:
Hope this helped! Nya~ :3
The answer is 1/2 * base * height
Solution :
Velocity of cart at t = 0 s is, u = 1.8 m/s .
Distance covered in 3 seconds is :
d = 1.8 m/s × 3 s
d = 5.4 m.
So, position of cart after t = 3 seconds is x = 2.8 + 5.4 m = 8.2 m .
Hence, this is the required solution.
