A ball is thrown vertically upward with a velocit

Question

A ball is thrown vertically upward with a velocity of 30 metre per second if the acceleration due to gravity is a gas metre per second square what will be the distance travelled by it in the last second of motion before again come to his hand

Arun · Accepted Answer

Upward velocity given to the ball is v.Acceleration due to gravity g acts on it in downward direction.Distance covered by it in T seconds, S T​ =vT− 21​ gT 2 Distance covered by it in T−1 seconds, S T−1​ =v(T−1)− 21​ g(T−1) 2 Hence distance covered in last second, S=S T​ −S T−1​ ∴ S=[vT− 21​ gT 2 ]−[v(T−1)− 21​ g(T−1) 2 ]OR S=[vT− 21​ gT 2 ]−[vT−v− 21​ g(T 2 +1−2T)]⟹ S=v+ 21​ g(1−2T)

IIT JEE Entrance Exam> A ball is thrown vertically upward with a...

A ball is thrown vertically upward with a velocity of 30 metre per second if the acceleration due to gravity is a gas metre per second square what will be the distance travelled by it in the last second of motion before again come to his hand

Deepak , 8 Years ago

Arun

LIVE ONLINE CLASSES

Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-

iit jee entrance exam

My rank is 29k, General, should I opt for any state college cse branch or some Nits in which in which I am getting ECE , chemical, mechanics etc....

iit jee entrance exam

How is Ranquer Eduzone,comparing, Akash,Fitjee,Resonance,Naryana

iit jee entrance exam

Can class 9th students study syllabus class of 11th

iit jee entrance exam

Sum of series 2[n/2] ! [n/2]!/ n! [2Co-2C2+3C2....+[-1]^n[n+1]2Cn] where n is an even positive integer. Kindly provide solution of this question and how to generalise this. How do we know that which expansion will give this?

iit jee entrance exam

IIT JEE Entrance Exam> A ball is thrown vertically upward with a...

A ball is thrown vertically upward with a velocity of 30 metre per second if the acceleration due to gravity is a gas metre per second square what will be the distance travelled by it in the last second of motion before again come to his hand

Deepak , 8 Years ago

Arun

LIVE ONLINE CLASSES

Other Related Questions on iit jee entrance exam

Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-

iit jee entrance exam

My rank is 29k, General, should I opt for any state college cse branch or some Nits in which in which I am getting ECE , chemical, mechanics etc....

iit jee entrance exam

How is Ranquer Eduzone,comparing, Akash,Fitjee,Resonance,Naryana

iit jee entrance exam

Can class 9th students study syllabus class of 11th

iit jee entrance exam

Sum of series 2[n/2] ! [n/2]!/ n! [2Co-2C2+3C2....+[-1]^n[n+1]2Cn] where n is an even positive integer. Kindly provide solution of this question and how to generalise this. How do we know that which expansion will give this?

iit jee entrance exam