badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 11

                        

Ball A is dropped from rest from a window . At same instant ball B is thrown downwards and ball C is thrown upwards from the same window .which statement concerning the ball is necessarily true if air resistanse is neglected ? and why? [A] All 3 balls strike the ground at same time. [B] All 3 balls strike the ground at same velocity; [C] All 3 balls have same velocity at any instant. [D] all 3 bqlls have same accln at any instant.

8 years ago

Answers : (1)

Blazing Ruler
37 Points
							

Ans is D.

See for ball 1 initial energy is mgh and similarly for the other two it is mgh+mv^2)/2. So on reaching the ground the three balss will have different velocities and will also take different time. Option 3 is pretty obvious to reject. For D every ball is having the same acceleration as g.

Please rate me.

8 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details