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JEE PHYSICS MCQ: MOTION IN PLANE
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Analyzing
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Statement I: For angle of projection , the horizontal range and maximum height are equal.
Statement II: The maximum range of projectile is directly proportional to square of velocity and inversely proportional to acceleration of gravity.
Statement II: The maximum range of projectile is directly proportional to square of velocity and inversely proportional to acceleration of gravity.
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Correct option: B
If both Statement - I and Statement - II are true but Statement - II is not the correct explanation of Statement - I
Option B (If both Statement - I and Statement - II are true but Statement - II is not the correct explanation of Statement - I) is correct because both statements are true, but the second statement does not explain the first.
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Given, The angle between is
Assertion: The necessary condition for motion in two dimensions, velocity and acceleration vectors should have any angle between and between them.
Reason: For two-dimensional or three-dimensional motion, velocity and acceleration of an object works in opposite direction. and
. Then, the angle between and is At the top of the trajectory of a projectile, the direction of its velocity and acceleration are A ball is thrown at an angle and another ball is thrown at an angle with the horizontal direction from the same point with velocity . The second ball reaches higher than the first ball. Find their individual heights. Take . Assertion: The drover in a vehicle moving with a constant speed on a straight road is in a non-inertial frame of reference.
Reason: A reference frame in which Newton's laws of motion are applicable is non-inertial.
Reason: For two-dimensional or three-dimensional motion, velocity and acceleration of an object works in opposite direction. and
. Then, the angle between and is At the top of the trajectory of a projectile, the direction of its velocity and acceleration are A ball is thrown at an angle and another ball is thrown at an angle with the horizontal direction from the same point with velocity . The second ball reaches higher than the first ball. Find their individual heights. Take . Assertion: The drover in a vehicle moving with a constant speed on a straight road is in a non-inertial frame of reference.
Reason: A reference frame in which Newton's laws of motion are applicable is non-inertial.