Question
A particle moving in a straight line with uniform
acceleration covers distances 5 m, 9 m, and 13 m in the 1st, 2nd, and 3rd second of motion respectively. What is its acceleration?Solution
We are given the distances covered in the 1st, 2nd, and 3rd seconds of motion: s₁ = 5 m (1st second) s₂ = 9 m (2nd second) s₃ = 13 m (3rd second) For uniformly accelerated motion, the distance covered in the n-th second is given by: sₙ = u + a/2 (2n - 1) Let’s apply this for each second: First second: s₁ = u + (a/2)(2×1 – 1) = u + (a/2) Second second: s₂ = u + (a/2)(3) = u + (3a/2) Third second: s₃ = u + (a/2)(5) = u + (5a/2) Now subtract: s₂ – s₁ = (u + 3a/2) – (u + a/2) = a ⇒ 9 – 5 = a = 4 m/s²
What is the position of Q with respect to O?
Who among the following sits 3rd to the right of the one who likes Bata?
Five persons D, E, F, G and H are sitting in straight line facing towards the north. F sits second from the left end. Only one person sits between F an...
Which among the following pairs sit immediate left and immediate right of each other’s respectively?
As many persons sit between O and L as between I and _____?
Statements:
B ≥ L = C; N ≤ L < O; Q ≥ N < R
Conclusions:
I. B > N
II. N = B
What is the position of K with respect to P?
How is Z related to C?
What is the position of Z with respect to U?
If ‘X’ is related to ‘W’ and ‘T’ is related to ‘S’ in a certain way, then ‘U’ is related to which of the following?
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