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JEE PHYSICS MCQ: MOTION IN PLANE
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+4 | -1
The minimum number of vectors having different planes which can be added to give zero resultant is
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Correct option: C
4
Option C (4) is correct because a minimum of four vectors in different planes are required to achieve a zero resultant.
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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.
