Tiêu đề 03. MOTION IN A STRAIGHT LINE (E).pdf ✅

03. MOTION IN A STRAIGHT LINE (E) NEET Practice Date: March 8, 2025 Duration: 1:00:00 Total Marks: 180 INSTRUCTIONS INSTRUCTIONS EASY PAPER 1. A ball thrown vertically upwards after reaching a maximum height returns to the starting point after a time of 10 . Its displacement is (1) (2) (3) Zero (4) 2. A particle having time period (in its circular mo‐ tion) completes half revolution. Its mean speed is [given Radius of circle ] (1) (2) (3) (4) 3. The distance travelled by a particle starting from rest and moving with an acceleration , in the third second is (1) (2) (3) (4) 4. are three balloons ascending with velocities , respectively. If a bomb is dropped from each balloon when they are at the same height, then (1) Bomb from reaches ground first (2) Bomb from reaches ground first (3) Bomb from reaches ground first (4) They reach the ground simultaneously 5. At a metro station, a girl walks up a stationary escalator in . If she remains stationary on the escalator, then the escalator take her up in . The time taken by her to walk up on the moving escalator will be (1) (2) (3) (4) 6. The displacement-time graphs of two particles and are straight lines making angles of respectively with the time axis. If the velocity of is and that of is . The value of is (1) (2) (3) (4) 7. A ball is thrown straight up in the air. For which situation are both the instantaneous velocity and the acceleration zero? (1) Halfway up and halfway down (2) On the way up (3) At the top of its flight path (4) None of the above 8. Which of the following is a one dimensional motion? (1) Earth revolving around the sun (2) Motion of wheels of moving train (3) Train running on a straight track (4) Landing of an aircraft 9. A wheel of radius 1 rolls forward half a revo‐ lution on a horizontal ground. The magnitude of the displacement of the point of the wheel ini‐ tially in contact with the ground is (1) (2) (3) (4) 10. Assertion : In a uniformly accelerated motion,acceleration time graph is a straight line with positive slope. Reason : Acceleration is rate of change of velocity h s 10 h 20 h 2 h 2πs = 50 cm 1.5 m/s 2.6 m/s 0.5 m/s 0.7 m/s ms 4 −2 3 6 m m 10 3 4 m m 19 3 B1, B2 and B3 v, 2v and 3v B1 B2 B3 20 sec 30 sec 12 sec 10 sec 25 sec 60 sec A B 30 ∘ and 45 ∘ A vA B vB vA/vB 1/2 1/√3 √3 1/3 m 2π √2π √π 2 + 4 π
(1) Both assertion and reason are correct and reason is the correct ex‐ planation of assertion (2) Both assertion and reason are correct but reason is not the correct explanation of assertion (3) Assertion is correct but reason is incorrect. (4) Assertion is incor‐ rect but reason is correct. 11. Match the Column I and Column II Column I Column II A. Displacement P. Slope of graph B. Velocity Q. Slope of tangent to curve C. Acceleration R. Area under curve D. Instantaneous velocity S. Slope of graph (1) A - S, B - Q, C - P, D-R (2) A - Q, B - S, C - R, D-P (3) A - R, B - P, C - S, D-Q (4) A - Q, B - S, C - P, D-R 12. Velocity of a body starting from rest is shown in the diagram. Find the displacement and distance travelled by the body. From to (1) (2) (3) (4) 13. The displacement of a particle as a function of time is in fig. The graph indicates that (1) The particle starts with a certain velocity, but the motion is re‐ tarded and finally the particle stops. (2) The velocity of par‐ ticle is constant throughout motion. (3) The acceleration of the particle is constant throughout motion. (4) The particle starts with constant velocity, the motion is acceler‐ ated and finally the par‐ ticle moves with an‐ other constant velocity. 14. A bullet emerges from a barrel of length with a speed of . Assuming contant ac‐ celeration, the approximate time that it spends in the barrel after the gun is fired is (1) (2) (3) (4) 15. Statement A : The acceleration of an object at a particular time is the slope of the velocity -time graph at that in‐ stant of time. Statement B : For uniform motion acceleration is (+)ve. (1) Statement A is cor‐ rect but Statement B is incorrect. (2) Statement A is in‐ correct but Statement B is correct. (3) Both Statements are correct. (4) Both Statements are incorrect. 16. The acceleration of a particle starting from rest varies with time according to relation . The velocity of the particle after a time will be (1) (2) (3) (4) 17. A point traversed of the circle of radius in time . The magnitude of the average velocity of the particle in this time interval is (1) (2) (3) (4) 18. A particle moves along the sides AB, BC, CD of a square of side 25 with a constant speed of . Its average velocity is (1) (2) (3) (4) 19. A ball is thrown up vertically with a speed and at the same instant another ball is released from a height . At time , the speed of rela‐ tive to is (1) (2) (3) (4) 20. A man leaves his house for a cycle ride. He comes back to his house after half-an-hour after covering a distance of one . What is his aver‐ age speed for the ride? (1) Zero (2) 2 x − t x − t v − t v − t t = 0 s 8 s 12m, 0m 24m, 24m 24m, 0m 16m, 16m 1.2 m 640 ms −1 1 s 40 ms 400 μs 4 ms a a = αt + β t αt 2 + βt 1 2 (αt 2+β) 2 + β αt 2 2 + βt αt 2 2 3/4 th R t πR t 3πR 2t R√2 t R √2t m 15 m/s 15 m/s 10 m/s 7.5 m/s 5 m/s A u B h t A B 2u u u − gt √(u 2 − gt) km kmh −1