Projectile Motion The ball is projected up from ground with speed 30 m/sec. What is the average velocity for time 0 to 4 sec? (a) 10 m/sec (b) 20 m/sec (c) 15 m/sec (d) zero Ruhul Amin Alig
Projectile Motion A body is projected vertically upwards. If t 1 and t 2 be the times at which it is at height h above the projection while ascending and descending respectively, then h is Ruhul Amin Alig
Projectile Motion A ball is dropped from the top of a tower of height 100 m and at the same time another ball is projected vertically upwards from ground with a velocity 25 ms^–1. Then the distance from the top of the tower, at which the two balls meet is (a) 68.4 m (b) 48.4 m (c) 18.4 m (d) 78.4 m Ruhul Amin Alig
Projectile Motion If u is the initial velocity of a projectile and v is the velocity at any instant, then the maximum horizontal range Rm is equal to Ruhul Amin Alig
Projectile Motion Which of the following is an essential condition for horizontal component of projectile to remain constant? (a) Acceleration due to gravity should be exactly constant (b) Angle of projection should be 45° (c) There should be no air-resistance (d) All of these Ruhul Amin Alig
Projectile Motion In the projectile motion, if air resistance is ignored, the horizontal motion is at (a) constant acceleration (b) constant velocity (b) variable acceleration (d) constant retardation Ruhul Amin Alig
