MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
Chilukuri Sai Kartik Grade: 12
        

The formula S=u+a(n-1/2) is dimensionally not correct.


But still we use it in variety of applications. Why do we still get the correct answer?


Please reply!!!

6 years ago

Answers : (4)

vikas askiitian expert
510 Points
										

Sn=un+an^2/2  ...........1               (displacement in n seconds)


Sn-1=u(n-1) +a(n-1)^2 /2.........2   (displacement in n-1 seconds)


 Snth=Sn-Sn-1


     Snth  =u + a(n-1/2) ..............3


in eq 1 , dimension of n is time and in eq 2 ,n-1 second that means 1 in n-1 second is having dimension of time......


1sec is a constant but it is having dimension ....so in same manner in eq 3 ,n-1/2 has dimension of time .....


so this relation is correct


approve my ans if u like

6 years ago
DIVYANK DUVEDI
33 Points
										

he you have taken this q frm dc pandey na

6 years ago
aakash
33 Points
										
a particle covers 10m in first 5s and 10m in next 3s. assuming constant acceleration find intial speed, acceleration , distance covered in next 2s.
2 years ago
PRAJVAL98
18 Points
										
it is dimentionally correct.
S in nth second in the sense u r talking about the diplacement in that second which will basically have the dimentional formula [M^0*L^1*T^-1]
the rhs also has the same dimentional formula.
 
                        prajval98
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: R 2,600
  • View Details
Get extra R 520 off
USE CODE: CART20
  • Complete Physics Course - Class 11
  • OFFERED PRICE: R 2,800
  • View Details
Get extra R 560 off
USE CODE: CART20

Ask Experts

Have any Question? Ask Experts

Post Question

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