Kinematics Question 240
Question: A body falls from rest in the gravitational field of the earth. The distance travelled in the fifth second of it’s motion is $ (g=10m/s^{2}) $ [MP PET 2003]
Options:
A) 25m
B) 45m
C) 90m
D) 125m
Show Answer
Answer:
Correct Answer: B
Solution:
$ h _{n}=\frac{g}{2}(2n-1)\Rightarrow {h _{5^{th}}}=\frac{10}{2}(2\times 5-1)=45\ m $ .
