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
bhavini garg Grade: 12
        

A body is fired upward with speed v . It takes time T to reach its maximum heght H.True or False.


a)It reaches H/2 in T/2


b)it has speed v/2 at H/2


c)it has speed v at 2T

6 years ago

Answers : (2)

Sabhareesh R
32 Points
										

C)


It has a speed v at 2T

6 years ago
Neel Pratik Bhatt
18 Points
										

To,


The person who Asked the Question:


When a body(an object) is fired up it will always have a negative acceleration or dissileration and will come to a stop.


Basically u represents the intial velocity and v represents the final velocity, but if you are taking v as the speed i.e distance upon time then:


GIVEN:


H is the maximum distance or height


v is the speed with wich the object was travelling


so,


we cannot say that H/2 in T/2 ( time taken to reach ) as you know that its deccelerating and so speed is not constant so v is not constant first of all so at a instant speed may be v1 and at the other it might be v2 . So i would say flase Example:


Lets take H as 5 mts And v is 3 mts.sec^-1then at 2.5 mts you can't say speed will be the same as it will be at 2.9 right?? As at 5 mts speed is 0 and at 2.5 speed may be 2.29. Under stood?


so in the same way v/2 at H/2 is false


Third is also False


 


If you didn't understand please reply as to Make you more clearer!!


Neel

6 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
  • Complete Physics Course - Class 11
  • OFFERED PRICE: R 2,800
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

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