0

ADNAN MUHAMMED

Grade 12,

Courses New

A stone is projected horizontally with 20m/s from top of a building . Calculate its position and velocity after 3 seconds neglecting air resistance

A stone is projected horizontally with 20m/s from top of a building . Calculate its position and velocity after 3 seconds neglecting air resistance
 
 

Grade:11

1 Answers

Arun
25750 Points
5 years ago
Since, body is projected horizontally with a velocity of 20m/s.
ux = 20m/s
ax = 0
So, vx = 20m/s for all time.
Along vertical axis,
uy = 0
t = 5
ay = 10m/s2
vy =?
vy = uy +ayt
=> vy = 0 + 10*5= 50m/s
So, magnitude of velocity of body after 5s
√{(50)²+(20)²}m/s
=√2900 m/s
=53.851 m/s
= 54 m/s (approx) 

Think You Can Provide A Better Answer ?

Other Related Questions on Mechanics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

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

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

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

Click Here Know More

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

Click Here Know More