JEE Main & Advanced
Physics
Motion in a Straight Line / सरल रेखा में गति
Question Bank
Self Evaluation Test - Motion in a Strainght Line
question_answer
A particle when thrown, moves such that it passes from same height at 2 and 10 seconds, then this height h is:
A)5g
B)g
C)8g
D)10g
Correct Answer:
D
Solution :
As the time taken from D to A = 2 sec. And D\[\to A\to B\to C=10\text{ sec}\left( given \right).\] As ball goes from \[B\to C\text{ }(\text{u=0, t=4sec})\] \[{{v}_{c}}=0+4g.\] As it moves from C to D, \[\text{s=ut+}\frac{1}{2}\text{a}{{\text{t}}^{2}}\] \[s=4g\times 2+\frac{1}{2}g\times 4=10g.\]