Ask a Doubt
Request a call back

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

NEET Class neet Answered

please answer this (Q.8)
question image
Asked by Prashant DIGHE | 24 Apr, 2020, 22:00: PM
answered-by-expert Expert Answer
Let the ball take t seconds to reach ground.
 
Velocity at (t-1) second = g(t-1)
 
Distance S travelled in last one second is obtained from the equation of motion ,
 
S = ut +(1/2)g t2 by substituting t = 1 and intial speed u = g(t-1)
 
Distance travelled in last second = g(t-1) +(1/2)g = 55
 
By substituting g = 10 m/s2 , we get from above equation , t = 5 s
 
Height of tower h = (1/2) g t2 = (1/2)×10×25 = 125 m
 
-------------------------------------------
 
When a thrown object vertically travels equal distance in 5th second and 6th second means , it reaches maximum
height after 5th second and travels downward at 6th second
 
Hence projection velocity to reach maximum height at t=5 second  , u = g t = 9.8 × 5 = 49 m/s
Answered by Thiyagarajan K | 25 Apr, 2020, 09:06: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
NEET neet - Physics
An object of mass 3 kg is at rest . Now if a force F=6t^2i+4tj is applied to the object what is the final velocity of the object after 3 second
Asked by cmashudrana | 26 Jul, 2024, 10:51: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
derive the equation of motions from vt graph
Asked by upparmanjunath70 | 19 Jul, 2024, 22:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
On the three corners of a square charge Q is kept and at the fourth corner charge q is kept. Find net electric force on charge q
Asked by zfaima704 | 19 Jul, 2024, 14:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
in a house three bulbs of 100w each are lighted for four hours daily and six tube lights of 20w each are lighted for five hours daily and a refrigerator of 400w is worked for 10hours daily for a month of 30days calculate the electricity bill if the cost of one unit is 4.00.
Asked by shaikmuneerjaan | 18 Jul, 2024, 20:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
An object is moving with variable speed then
Asked by nk4746870 | 15 Jul, 2024, 21:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
elevation of lift
Asked by dasmyton | 09 Jul, 2024, 22:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
a sonometer wire emits a fundamental note of frequency 150 hz calculate the frequency of note emitted when tension is change in the ratio of 9:16 and length of 1:2
Asked by shobhaguduru02 | 09 Jul, 2024, 20:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
speed of light in vacuum is 3 into 10 to the power 8 m/s if refractive index of glass is 1.5 the time taken by the light to travel 400 m in glass in microsecond is
Asked by kashinathpaikrao89446 | 09 Jul, 2024, 10:46: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
a body falls freely from a height it's average velocity when it reaches earth is
Asked by dshyamala44 | 08 Jul, 2024, 21:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
NEET neet - Physics
To a fish in water, a bird in air appears to be at 30 cm from the surface. If a
Asked by jagadishshnkr | 08 Jul, 2024, 20:50: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Are You a Teacher or a Parent Seeking Customised Tests? Click here
×