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TEJAS ACADEMY OF SCIENCE, , Physics, Time : 1.00 hr Xi Marks : 20, , , , , , , , Projectile Motion(11th) ], , 1) Abody has an initial velocity of 3 m/s and has an acceleration of 2m,/s*, then distance travelled by it in, 5 second will be :, , A) 10m B) 20m Cc) 40m D) 80m, , 2) A body moving with velocity of 10 m/s accelerates uniformly and covers distance 300 m to achieve, velocity 20 m/s then time taken this journey along straight line :, , A) 5 second B) 7.5 second C) 10 second D) 20 second, , 3) Acar travelling with 72 kmvhr is braked so as to produce retardation of 2m/s® after what time will its, speed will be half the initial value?, , A) 2 second B) S5second C) 7 second D) 18 second, , 4) An aeroplane touches the runway at 270 km/hr and stops after run of 1.5 kilometer. How long does it, lake to stop ?, , A) 30 second B) 40 second C) 60 second D) 1 hour, 5) Acar accelerates from rest at the rate of 1m,s®. After what distance will its speed be 40 m's ?, , A) 800 m B) 600 m C) 400 m D) 200 m, , 6) Acar travelling at 72 kmvhr has reduced Ils velocity to 36 km/hr in 5 s. If retardation is uniform how far, the car travel farther before it comes to rest 7, , A) 10m B) 25m Cc) 50m D) 75m, , 7) Acar accelerates on a straight road from rest to a speed of 180 km/hr in 25 second. Assuming uniform, acceleration of the car, the distance covered in this time is :, , A) 625m B) 600m Cc) 144m D) 72m, , 8) A body has initial velocity of 3 m/s and has an n acceleration of 2m,'s” , the distance travelled by it in 5, second is :, , A)60m B) 50m c)40m D) 30m, , 9) An aeroplane take off the ground after covering a distance of 800 m of runway in 16 second, its, acceleration will be :, , A) 100m/s? B) 50m/s? C) 16.25m,/s? D) 6.25m/s?, , 10) A car is moving along a straight road with uniform acceleration. It passes through two points P and Q, with velocity 3 0 km/hr and 40 km/hr respectively. The velocity of car midway between P and Q is :, , A) 33.3 km/hr B) 25V2km/hr C) 20V3km/hr D) 35 km/hr
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TEJAS ACADEMY OF SCIENCE 2, , , , 11) How much time is required to bring the train to rest if it takes 5 second to reduce its speed from 90, km/hr to 36 km/hr :, , A)5s B) 833s C)10.2s D) 12.43 s, , 12) A car passes three points A, B and C at 5 m/s, 10 m/s and 15 m/s respectively with uniform, acceleration.!f distance AB = 75 m then distance BC is equal to :, , A)75m B) 100m C) 125m D) 200m, , 13) The umpire tosses the coin with an initial velocity of 10 m/s, in the absence of air resistance, the, height the coin will reach will be :, A) 10m B) 5.1m C)4.9m D) 1.827m, , 14) If T is time taken to come down from the top of a tower. Time taken to cover half the height of tower is, , A)2T B)T c) 1/2 D) T/v2, , 15) A body falling from rest has a velocity "v" after it falls through a distance "h".The distance it has to fall, further, for Its velocity to become double Is :, , Ajh B) 2h C) 3h D) 4h, , 16) A body takes 16 second to come down from top of tower. Time taken to cover one fourth of height of, the tower is :, A)8s B)4s C)2s Djis, , 17) A stone projected so as to reach a height 144 m passes through x and y with velocities v/4 and v6 ., The distance between two points Is :, , A) 36m B) 16m cjem D)5m, , 18) A stone dropped into lake from a tower 500 m high. The sound of splash will be heard by a man on the, lower after :, A)21s B) 115s C)i4s D) 10s, , 19) A stone is thrown vertically downward with a velocity of 5 m/s from top of tower of height 30 m, stone, will hit the ground with velocity (Takeg = 10, , , , A) Sms B) 15 mis C) 20 m's D) 25 mis, , 20) From top of a tower one stone is dropped and another stone is thrown vertically downward with, velocity of 3 m/s, the separation between two stones Is 10 m after :, , Ajis Bj22s Cj33s D)4s, , , , Rahul Chavan Sir 9130013007