1.
Assertion (A): The horizontal component of velocity remains unchanged during projectile motion. Reason (R): There is no horizontal acceleration when air resistance is neglected.
2.
Assertion (A): Uniform circular motion is a non-uniform motion. Reason (R): The direction of velocity changes continuously even if speed remains constant.
3.
The angular velocity of a body moving in a circle is doubled while radius remains constant. The centripetal acceleration becomes
4.
The angle between two equal vectors whose resultant is zero is
5.
Match the Columns: Q55. Column–I P. Projectile Motion Q. Uniform Circular Motion R. River Crossing S. Vector Addition Column–II 1. Relative velocity 2. Triangle law 3. Parabolic trajectory 4. Centripetal acceleration
6.
The horizontal range of a projectile projected at 30∘ is equal to that projected at
7.
The resultant of two vectors acting in the same direction is
8.
A body moving in a circle covers equal angles in
9.
Which quantity remains constant throughout ideal projectile motion?
10.
The SI unit of angular velocity is
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