Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • A parachutist after bailing out falls 50 m without friction. When the parachute opens, it decelerates at 2 m/s2. He reaches the ground at a speed of 3 m/s. At what height (in meters), di

A parachutist after bailing out falls 50 m without friction. When the parachute opens, it decelerates at 2 m/s2. He reaches the ground at a speed of 3 m/s. At what height (in meters), did he bail out?

Option: 1

293


Option: 2

111


Option: 3

91


Option: 4

182


Answers (1)

best_answer

initially, the parachutist falls under gravity

u^{2}= 2ah= 2\times 9.8\times 50= 980 m^{-2}s^{-2}

He reaches the ground with speed

= 3m/s,a= -2ms^{-2}

\therefore \left ( 3 \right )^{2}= u^{2}-2\times 2\times h_{1}

or\: \: 9= 980-4h_{1}

or\: \: h_{1}=\frac{971}{4}

or\: \: h_{1}=242.75m

\therefore Total\: height\: = 50 + 242.75

= 292.75

= 293m

Posted by

HARSH KANKARIA

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE 2026: IIT admissions show major shift toward AI, data science, away from core engineering courses
anam-khan

JEE Main 2026: NIT Delhi cut-offs for BTech courses show ever-increasing demands for AI, computer skills
anam-khan

597 Eklavya school students clear JEE, NEET exams in 2024-25; Gujarat, MP lead

Latest Question