Assertion and Reason (a) If both assertion and reason are true and reason is the correct explanation of the assertion. (b) If both assertion and reason are true, but reason is not correct explanation of the assertion. (c) If assertion is true, but reason is false. (d) If both assertion and reason are false. (e) If reason is true but assertion is false. Assertion: Two balls of different masses are thrown vertically upward with same speed. They will pass through their point of projection in the downward direction with the same speed. Reason: The maximum height and downward velocity attained at the point of projection are independent of the mass of the ball.
  • (a)
  • (b)
  • (c)
  • (d)
  • (e)
(a) If both assertion and reason are true and reason is the correct explanation of the assertion. (b) If both assertion and reason are true, but reason is not correct explanation of the assertion. (c) If assertion is true, but reason is false. (d) If both assertion and reason are false. (e) If reason is true but assertion is false. Assertion: For an object in uniform acceleration motion, the velocity time graph is a straight line inclined to time-axis. Reason: In a uniform acceleration motion, velocity changes uniformly
  • (a)
  • (b)
  • (c)
  • (d)
  • (e)
Two bodies are dropped from different heights $h_1$ & $h_2$. The ratio of the times taken by them to reach the ground will be
  • $h_1 : h_2$
  • $\sqrt {h_1} : \sqrt {h_2}$
  • $h_1^2 : h_2^2$
  • $h_2 : h_1$
The displacement of a particle moving in straight line depends on time t as x=at3+bt2+ct+d which of the following is true? (More than one correct)
  • Initial acceleration depends on b only
  • Initial velocity depends on c onlycorrect
  • Initial displacement is dcorrect
  • Ratio of initial velocity /initial acceleration depends on a and c
A ball is bouncing elastically with a speed 1 m/s between walls of a railway compartment of size 10 m in a direction perpendicular to walls. The train is moving at a constant velocity of 10 m/s parallel to the direction of motion of the ball. As seen from the ground
  • speed of ball changes every 10 seconds.
  • the acceleration of ball is the same as from the train.correct
  • average speed of ball over any 20 second interval is fixed. correct
  • the direction of motion of the ball changes every 10 seconds
A particle moves along the x-axis as $x= 4(t-2) + a(t-2)^2$ Choose the correct answer(more than one correct)
  • Acceleration is 2a
  • The velocity at 2sec is 4 m/scorrect
  • The particle is at origin at t=0
  • None of the above
Match the column
motion-in-a-straight-line-mcq-questions-class11-1.png
  • (p) -> (i), (q) -> (iii) ,(r) -> ii
  • (p) -> (iii), (q) -> (ii) ,(r) -> (i)
  • (p) -> (i), (q) -> (ii) ,(r) -> (iii)
  • (p) -> (iii), (q) -> (i) ,(r) -> (ii)
A body starting from rest moves along a straight line with a constant acceleration. The variation of speed (v) with distance (s) is represented by the graph
motion-in-a-straight-line-mcq-questions-class11-2.png
  • (a)
  • (b)
  • (c)
  • (d)
An object moves in a straight line with velocity given as $v=(3 m/s) + (.1 m/s^3) t^2$ Calculate the average acceleration between t=0 and t=5 sec
  • 1 m/s2
  • 1.1 m/s2
  • .5 m/s2
  • 1.2 m/s2
The acceleration of the object at t=5 sec
  • .5 m/s2
  • 1.5 m/s2
  • 1 m/s2
  • 1.1 m/s2
From the top of a tall building you throw one ball (A)straight up with speed $u$ and one ball (B) straight down with speed $u$ Which ball has the greater speed when it reaches the ground?
  • A
  • B
  • Both will have same speed
  • Can't say
Which ball gets to the ground first
  • A
  • B
  • Both same time
  • Can't say
Which ball has a greater displacement when it reaches the ground?
  • A
  • B
  • Both have same
  • Can't say
Which ball has traveled the greater distance when it hits the ground?
  • A
  • B
  • Both same
  • Can't say
The dimensional formula for speed is
  • T
  • LT
  • (i) and (ii)
  • None of the above
The dimensional formula for velocity is
  • [LT]
  • [L2T]
  • (i) and (ii)
  • None of the above
A car starts from rest and moves with constant acceleration . The ratio of the distance covered in the nth second to that in n seconds is :
  • $\frac {2}{n} - \frac {1}{n^2}$
  • $\frac {1}{n} - \frac {1}{n^2}$
  • $\frac {2}{n^2} - \frac {1}{n}$
  • None of the above
0 h : 0 m : 1 s

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