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: 9
        

A cricketer hits a ball with a velocity 25 m/s at 60° above the horizontal. How far above the ground it passed over a fielder 50 m from the bat (assume the ball is struck very close to the ground)


(a)    8.2m


(b)    9.0m


(c)    11.6m


(d)    12.7m

8 years ago

Answers : (4)

vikas askiitian expert
509 Points
							

horizontal component of velocity = Vx = Ucos@

            Ux = 25cos60=25/2 m/s

            Uy = 25sin60 = 25(3)1/2 /2

 it covers a distance of 50 m after time t        

since accleration along horizontal direction is 0 so

             V = d/t        

        25/2 = 50/t

            t = 4sec

now after 4 sec let the height attained by particle is H then

 H = Uyt - gt2/2

   = 25(3)1/2*4/2 - g*16/2

   = 50(3)1/2 - 80

   =6.6 m

 

u can get this result directly by using equation of trajectory ,

Y(height) = Xtan@[ 1- X/R ]               

R is horizontal range , X is horizontal distance from point of projection & @ is angle of projection

 

8 years ago
Black Widow
36 Points
							

y=xtanα-g*x2/2u2cos2 α

hence on solving you will get a as answer

8 years ago
Samuel Garry
61 Points
							
It's also is 8.2 metres that is a option as it is the most closest 6.6 metres rest I don't know
It can directly come by equation of trajectory
5 months ago
Anuj Tapare
13 Points
							
Take g= 9.8 so we can get ans 8.2 we have to take 9.8 due this is a real type que , and we all know that we assume 10 instead of 9.8
one month ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 276 off

COUPON CODE: SELF10


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


Get Extra Rs. 297 off

COUPON CODE: SELF10

Ask Experts

Have any Question? Ask Experts

Post Question

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