दिमाग का खेल – 4 (भौतिक विज्ञान) The Brain Teaser of this week is based on the concepts of Physics. This week’s brain teaser is given below : A ball is placed at origin of the x-y plane. It is projected with a velocity of (√244) m/s at an angle of tan-1(6/5) from the positive … Continue reading BRAIN TEASER-4 (PHYSICS)