Question

Journey in a train is adventurous particularly when you have a seat. The girl sitting near window ate a banana and dropped the peel from the window. Her co-passenger looking through the window found that it dropped vertically down and touched the ground in $0.2s$. After sometime she requested her sister sitting on the upper berth to drop a chocolate bar.The sister dropped the bar, but it fell in front of the girl instead of reaching her hand. She was angry but the co-passenger calmed her by saying that she dropped exactly in line of your hand but as the train is accelerating it did not reach you and fell in front of you. If a projectile has velocity greater than escape velocity which trajectory it will follow

• A. elliptic
• B. hyperbola
• C. vertical straight
• D. parabolic

Answer 1

Answer: (B)

hyperbola

Whenever the projectile velocity is greater than escape velocity; the resultant trajectory is hyperbolic. If projectile velocity is equal to escape velocity; the resultant trajectory is parabolic. If projectile velocity is smaller than escape velocity; the resultant trajectory is elliptical.