A stone is thrown vertically up with a speed of 30m/s from a very tall cliff from its edge . Find the average velocity over 10 seconds from the instant it was thrown up. g=10 m/s^2

Question

sunny patel · Answer

Stone will first reach a maximum height in time ‘t’. then it will descend to the point of throw in another time ‘t’ with velocity 30m/s downwards. ‘t’ can be calculated from v = u + at. So ‘t’ = 3sec. So in total 6sec the stone is at the point of start i.e no displacement at all. Now we have to calculate distance covered byy stone in next 4 seconds from s = ut + 1/2(at^2). So distance traveled in next 4 seconds comes to be 200m. In terms of displacement the stone’s displacement is 200m in 10 seconds. therefore average velocity is equal to 200m/10sec = 20m/s.

Vikas TU · Answer

Dear Student,

Average Velocity=Total Displacement/Total time

H=Displacement
From the equation of motion,
S=ut+at²/2
=>H=30x10-g10²/2
=>H=-200m

the –ve sign here signifies that the ball has descended 200 m below from its point of projection. (normal sign convention)

Hence magnitude of displacement=200m
Time=10s
Average Velocity=200/10=20m/s

Cheers!!

Regards,

Vikas (B. Tech. 4^th year
Thapar University)

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

Guest

A stone is thrown vertically up with a speed of 30m/s from a very tall cliff from its edge . Find the average velocity over 10 seconds from the instant it was thrown up. g=10 m/s^2

A stone is thrown vertically up with a speed of 30m/s from a very tall cliff from its edge . Find the average velocity over 10 seconds from the instant it was thrown up. g=10 m/s^2

2 Answers

Think You Can Provide A Better Answer ?

Other Related Questions on General Physics

ASK QUESTION

Answer and earn gift vouchers

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Complete Self Study Package designed by Industry Leading Experts

Live 1-1 coding classes to unleash the Creator in your Child

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Register Now & Win Upto 25% Scholorship

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

Guest

IIT JEE Courses

One Year IIT Programme

Two Year IIT Programme

Crash Course

NEET Courses

One Year NEET Programme

Two Year NEET Programme

One to One

School Board

Live Online classes

Class 11 & 12

Class 9 & 10

Class 6, 7 & 8

Test Series

JEE test series

NEET test series

C.B.S.E test series

Complete Self Study Packages

FULL COURSE

For class 12th

For class 11th

A stone is thrown vertically up with a speed of 30m/s from a very tall cliff from its edge . Find the average velocity over 10 seconds from the instant it was thrown up. g=10 m/s^2

A stone is thrown vertically up with a speed of 30m/s from a very tall cliff from its edge . Find the average velocity over 10 seconds from the instant it was thrown up. g=10 m/s^2

2 Answers

Think You Can Provide A Better Answer ?

Other Related Questions on General Physics

ASK QUESTION

Answer and earn gift vouchers

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Complete Self Study Package designed by Industry Leading Experts

Live 1-1 coding classes to unleash the Creator in your Child

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Register Now & Win Upto 25% Scholorship