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Motion in a Plane · Question 50

AIPMT 2001MCQEasy📈 Topic in 38% papers+4−1
1

A particle is projected making an angle of 45 with horizontal having kinetic energy K. The kinetic energy at highest point will be

  1. K 2
  2. K2
  3. 2K
  4. K

Answer

(2) K2

Solution

At the highest point only the horizontal velocity u 45 remains.

K' = 12m(u 45 )2 = 12mu2 2 45

= K 12 = K2

Answer: (2)

AIPMT 2001

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2

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
AIPMT 2000
3

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
AIPMT 2000

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