Kinematics Question 213

Question: A ball is dropped downwards. After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds [BHU 1998]

Options:

A) 25 m

B) 20 m

C) 50 m

D) 9.8 m

Show Answer

Answer:

Correct Answer: A

Solution:

distance between the balls = distance travelled by first ball in 3 seconds

distance travelled by second ball in 2 seconds = $ \frac{1}{2}g\ {{(3)}^{2}}-\frac{1}{2}g\ {{(2)}^{2}}=45-20=25\ m $



NCERT Chapter Video Solution

Dual Pane