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PHYSICS Total Marks : 34, , D [> Pp DPP No. 16 Max. Time : 38 min., , DAILY PRACTICE PROBLEMS:, , , , Topics : Projectile Motion, Rectilinear Motion, , , , Type of Questions MM., Min,, Single choice Objective ('-1" negative marking) Q.1 to 0.6 (3 marks, 3 min.) (18, 18), Subjective Questions ('-1° negative marking) Q.7 to Q.8 (4 marks, § min.) (8, 10), Match the Following (no negative marking) (2 * 4)Q.10 (8 marks, 10 min.) (8, 10), 4. For ground to ground projectile motion equation of path is y * 12 x — 3/4 x’. Given that g = 10 ms”. Whatis, the range of the projectile?, (A) 36m (B) 30.6m (Cc) 16m (D) 124m, , The vertical height of the projectile at time tis given by y = 4t-{? and the horizontal distance covered, is given by x = 3t. What is the angle of projection with the horizontal?, (A) tan’ 3/5 (B) tan” 4/5 (C) tan" 4/3 (D) tan 3/4, , Aparticle Ais projected vith speed V, from a point making an angle 60° with the horizontal. At the same instant,, second particle B (lie in the same hon zontal plane) is thrown vertically upwards from a point directly below the, maximum height point of parabolic path of A, with velocity V,.. If the two particles collide then the ratio of V,/V.,, should be ;, , ay (B) 2/3 (©) J32 (0) 3, , Acar accelerates from rest at a constant rate « for some time after which it decelerates at a constant, rate fi to come to rest. If total time taken by car is t, then maximum velocity V will be :, , 2 2 (, , , , A lift is moving in upward direction with speed 20 m/s and having acceleration 5 m/s* in downward, direction. A bolt drops from the ceiling of lift at that moment. Just after the drop, the :, , (A) velocity of bolt with respect to ground is zero, , (B) velocity of bolt with respect to ground is 20 m/s in upward direction, , (C) acceleration of bolt with respect to ground is 5 m/s*, , (D) none of these, , Abalioon is moving with constant upward acceleration of 1 m/s’. A:stone is thrown from the balloon downwards, with speed 10 m/s with respect to the balloon. At the time of projection balloon is at height 120 m from the, ground and is moving with speed 20 m/s upward. The time required to fall on the ground by the stone after the, Projection will be, nea, , a |, , (A) 4 sec. (B) 5 sec., (C) 6 sec. (D) None of these
