Kinematics — Hard (45 min | 50 Questions)

Practice 100 questions on Kinematics — Hard (45 min | 50 Questions). Includes: **Assertion (A):** In projectile motion, the speed of…; **Assertion (A):** Uniform circular motion is an…; Two trains are on parallel tracks. Train A (100 m…. Free quiz on NoteTube.

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1.
**Assertion (A):** Uniform circular motion is an accelerated motion. **Reason (R):** The velocity in UCM changes in direction but not in magnitude, and any change in velocity (however small) constitutes acceleration.
2.
**Assertion (A):** An object moving with non-zero velocity can have zero acceleration. **Reason (R):** Uniform motion (constant velocity) means zero change in velocity, hence zero acceleration.
3.
A particle in UCM has a time period of 2 s. The change in velocity vector in 0.5 s (quarter period) when speed = π m/s is:
4.
A particle moves in a circle of radius 5 m. Its speed increases uniformly from 2 m/s to 10 m/s in 4 s. Find the net acceleration at t = 4 s.
5.
Two trains are on parallel tracks. Train A (100 m long) moves at 72 km/h; Train B (150 m long) moves in the same direction at 54 km/h. Time for A to completely pass B is:

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