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Motion in a Plane

AIPMT 2000MCQEasyNot asked in last 5 yrs+4−1
Ques. 1AIPMT 2000

The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river along the shortest path in 15 min. Then the velocity of river stream is

  1. 3 km/hr
  2. 4 km/hr
  3. 29 km/hr
  4. 41 km/hr

Answer

(1) 3 km/hr

Solution

For the shortest path, the resultant velocity is perpendicular to the stream.

Resultant speed = 1 km 1560 hr = 4 km/hr

vboat2 = vresultant2 + vriver2

vriver = 52 - 42

= 3 km/hr

Answer: (1)

Keep practising — Motion in a Plane

Ques. 2AIPMT 2000

Two projectiles of same mass and with same velocity are thrown at an angle 60 and 30 with the horizontal, then which will remain same

  1. time of flight
  2. range of projectile
  3. maximum height acquired
  4. all of them

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All NEET Physics chapters
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