Case Study Questions for Class 11 Physics Chapter 4 Motion In A Plane

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Case Study Questions for Class 11 Physics Chapter 4 Motion in a Plane

Case Study Questions:

Table of Contents

Question 1:

Projectile motion is a form of motion in which an object or particle is thrown with some initial velocity near the earth’s surface and it moves along a curved path under the action of gravity alone. The path followed by a projectile is called its trajectory, which is shown below. When a projectile is projected obliquely, then its trajectory is as shown in the figure below.

Here velocity u is resolved into two components, we get (a) u cosθ along OX and (b) u sinθ along OY .

(i) The example of such type of motion is
(a) motion of car on a banked road
(b) motion of boat in sea
(c) a javelin thrown by an athlete
(d) motion of ball thrown vertically upward

(ii) The acceleration of the object in horizontal direction is
(a) constant
(b) decreasing
(c) increasing
(d) zero

(iii) The vertical component of velocity at point H is
(a) maximum
(b) zero
(c) double to that at O
(d) equal to horizontal component

(iv) A cricket ball is thrown at a speed of 28 m/s in a direction 30° with the horizontal. The time taken by the ball to return to the same level will be
(a) 2.0 s
(b) 3.0 s
(c) 4.0 s
(d) 2.9 s

(v) In above case, the distance from the thrower to the point where the ball returns to the same level will be
(a) 39 m
(b) 69 m
(c) 68 m
(d) 72m

Answers:

(i) c
(ii) d
(iii) b
(iv) d
(v) b

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Case Study Questions for Class 11 Physics Chapter 4 Motion In A Plane

Case Study Questions for Class 11 Physics Chapter 4 Motion in a Plane

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Case Study Questions for Class 11 Physics Chapter 4 Motion in a Plane

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