Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

A ball thrown up is caught by the thrower after 4s. How high did it go and with what velocity was it thrown? how far below its heighest point was it 3 s after start?
Asked by | 21 Aug, 2012, 12:15: AM
Expert Answer
the time taken to move upward=time taken to move downwad
so the time taken by the stone to come down from the highest point=2 s
so from 2 nd equation of motuion,as it was moving down: 0+1/2 gt2=h
   h=5x2x2=20 m
so ut-1/2 g t2=20  while moving up
2u-20=20
u=20m/s
ie the distance it covered in t=1 sec from the highest point:h=5t2=5m
Answered by | 23 Aug, 2012, 03:45: PM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
a particle start from rest and move along a straight line with uniform acceleration.the ratio of time taken to cover successive distance in the ratio 1:3 is
Asked by hy9022075 | 10 Jan, 2023, 09:06: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
if position 'x' defined a function of time as: x(t)=t*3+2t*2+3t+4 . (1) find initial position of particle (2) find velocity in time interval from to =0 at t=3 second
Asked by ad4957216 | 03 Jan, 2023, 04:54: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
how to solve this
Asked by sumityadv5665 | 24 Dec, 2022, 02:36: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
16dx2/dt2+ 25x = 0
Asked by adityajaiswal80551 | 18 Dec, 2022, 06:29: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
A person goes to his office from his home daily at a fixed speed but today he decided to reduce his speed by 20% as a result he reaches his office 16 minute late. what's the actual time he takes to reach his office daily
Asked by prashantgaikwadfox000 | 25 Sep, 2022, 05:38: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
find the ratio of average speed and magnitude of average velocity of tip of a minute hand in 20 minutes
Asked by ukalyadab | 18 Jul, 2022, 11:52: AM
ANSWERED BY EXPERT
CBSE 11-science - Physics
what do you mean by aircraft wind problem
Asked by madhavrao135 | 13 Jul, 2022, 07:33: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
X = t2 + 2t Find velocity at t = 2 Sec
Asked by piyushhoney2006 | 20 Jun, 2022, 04:12: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
motion
Asked by kalraneha629 | 18 Jun, 2022, 09:16: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
A particle travels in a straight line, such that for a short time 2s≤t≤6s, its motion is described by v=(4/a) m/s, where a is in m/s 2 . If v =8m/s when t = 2s, determine the particle's acceleration when t = 4s.
Asked by varmaakshay2020 | 13 Jun, 2022, 11:43: AM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt