 ×     #### Thank you for registering.

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

Click to Chat

1800-1023-196

+91-120-4616500

CART 0

• 0

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
```
a bodyprojected up reaches a point A in its path at the end of 4 th second and reaches the ground after 5 seconds from the start the height of A above the the ground is
a  bodyprojected up reaches a point A in its path at the end of 4th second and reaches the ground after 5 seconds from the start the height of A above the the ground is

```
4 years ago

```							Time of ascent=Time of descent=2.5s as total time is 5sLet x be the height of point AAt max. height, v=0. Thus,v=u+at0=u+(-g)tu=gt and thus u=(10)2.5= 25m/sWKT, u2=2gHH=25(25)/20=31.25mWe can infer that point A is in the path of descent.Now starting from the max height H, u=0. Already 2.5 seconds are over. So to reach A the body must travel 1.5 seconds more. If H-x is the distance of A from max height,H-x=1/2gt2H-x=1/2(10)(1.5)2H-x=2.25(5)=11.25x=31.25-11.25Thus, x=20mFinal answer=20m
```
4 years ago
```							from the aboe question we haveTime of ascent=Time of descent=2.5s as total time is 5sLet x be the height of point AAt max. height, v=0. Thus,v=u+at0=u+(-g)tu=gt and thus u=(10)2.5= 25m/sWKT, u2=2gHH=25(25)/20=31.25mWe can infer that point A is in the path of descent.Now starting from the max height H, u=0. Already 2.5 seconds are over. So to reach A the body must travel 1.5 seconds more. If H-x is the distance of A from max height,H-x=1/2gt2H-x=1/2(10)(1.5)2H-x=2.25(5)=11.25x=31.25-11.25Thus, x=20mFinal answer=20m
```
4 years ago
Think You Can Provide A Better Answer ?

## Other Related Questions on Mechanics

View all Questions »  ### 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