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: 12

                        

Their is a tower of height 25m.At the top of the tower a man is standing with a ball in his hand.The man throws the ball with a velocity of 20m/sec in the upward direction.Find the time taken by the ball to reach the ground.

5 years ago

Answers : (2)

Sumit Majumdar
IIT Delhi
askIITians Faculty
137 Points
							From the top of the tower, the time it would take to reach the highest point would be given by:
t=\frac{u}{g}=\frac{20}{10}=2 sec
The same time would be taken to come back to the top of the tower.
Now the time it would take to come to ground from the top of the tower can be found from the formula:
s=ut+\frac{1}{2}gt^2\Rightarrow25=20\timest+\frac{1}{2}\times10\times t^2\Rightarrow t= 1 sec
Hence, the total time taken would be equal to: 2+2+1=5 sec.
Here, we havent taken the height of the man into account, as its not given.
5 years ago
sajid
615 Points
							
s=ut+\frac{1}{2}gt^2\Rightarrow25=20\timest+\frac{1}{2}\times10\times t^2\Rightarrow t= 1 secto reach highest point t=u/g=2 sec
total time=2+2+1=5 sec
5 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

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


Course Features

  • 731 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