Page 1 : MULTIPLE CHOICE QUESTIONS (MCQS):, (1) A body, thrown at some angle 0 above or below the horizontal and moving freely under the, action of gravity, iş called:, • Rocket, (2) The path described by a projectile represents a:, • Hyperbola, (3) The time taken by a projectile to reach its maximum height is:, • Bullet, Airship, • Projectile, • Parabola, • Straight line, • Circle, V, Sine, V. Cose, V Sino Cose, (4) The maximum height attained by a projectile is:, V Sin'8, V Cos'e, v Sin'e, 2g, (5) The horizontal range of a projectile be found by the formula:, V Sin20, V Sin'e, 28, v Sin20, v: Cos'u, R=, 2g, (6) The total time taken by a projectile from starting at the surface, the earth to landing again on, carth is given by., V. Sind, 2V, Sine, 2V. Sin, • T=, 2g, •T-, (7) Due to presence of air resistance, the total time of flight of a projectile:, • Remains the same, (8) A projectile is fired with initial velocity of 90n/s to hit a ground level target. Its maximu, • Decreases, • Becomes zero, • Increases, horizontal range will be:, • 9.2m, (9) In projectile motion, a body moves with:, • Constant vertical component of velocity, • Both changing horizontal and vertical component of velocity, * Vertical compoment changing but Horizontal component offvelocity constant, (10) if a projectile is launched at 45° with velocity 100m/s it his ilhe target. It will have doulsle the, range if its velocity is:, • 141.4m/s, (11) If a projectile is thưown at an angle of 35", it hits a jeentrain target. It will have the same range it, it is thrown at an angle of., • 45°, (12) Maximum height of a projectile depends on:, • Angle of projection Velocity of projection • Both angle and velocity none ol thhese, (13) During projectile motion, the acceleration along the hurizontal direction, * Decreases, (14) The projectile inyotaun is a superpositiun of. Www.educationinkarachi.org, • Circular motion, (15) A projectile, which is fired horizontally, has its speed maximum at the moment of:, • Projection, (16) The range of a projecile is maximum when the factor Sin 2e is equal to:, • 826.Sım, 413m, Constant horizontal component of velucity, • 200m/s, • 173.2m/s, • 400m/s, 70, - Is zero, • lucreases, * Tte of thes, • One-dimentional motion, • SHM, * nune uf these, • Hining the ground, • Both of these, * une of these, - 45, 90, (17) An angle subtended al its centre by an are whose length is equal to its radius is:, • 37.3, (18) Two projectiles A and B are thrown up with she some speed at an agle of el" ni u, respectively with the horizontal, then:, • The range of A will be greater, • The range of A and B will be same, (19) In a projectile mution, this velocity remains the same:, • Velocity, (20) An aircraft takes off as 30° with 500km/h its venial component of velocity will be., • 500 km/h, (21) A projectile must be launched to maximum range at an angle of, • 47.3°, • 57.3, * 67.3, • The range of B will be greater, • The range is izidependent et the angle, • ilorzonal velocity . Vertical velocity, - Terminul velucity, 433 kin /, + 250 km /h, • Zeru, 60°, - 30, 90