Two projectiles are thrown with same initial velocity making an angle of 45∘ and 30∘ with the horizontal respectively. The ratio of their respective ranges will be :
02Medium53×since 2003Q7797
A child stands on the edge of the cliff 10m above the ground and throws a stone horizontally with an initial speed of 5ms−1. Neglecting the air resistance, the speed with which the stone hits the ground will be ms−1 (given, g=10ms−2 ).
03Easy53×since 2003Q7798
The initial speed of a projectile fired from ground is u. At the highest point during its motion, the speed of projectile is 23u. The time of flight of the projectile is :
04Medium53×since 2003Q7799
Two objects are projected with same velocity 'u' however at different angles α and β with the horizontal. If α+β=90∘, the ratio of horizontal range of the first object to the 2nd object will be :
05Easy53×since 2003Q7800
The maximum vertical height to which a man can throw a ball is 136 m. The maximum horizontal distance upto which he can throw the same ball is :
06Medium53×since 2003Q7801
A projectile is projected at 30∘ from horizontal with initial velocity 40ms−1. The velocity of the projectile at t=2s from the start will be : (Given g=10m/s2 )
07Medium53×since 2003Q7802
Two projectiles are projected at 30∘ and 60∘ with the horizontal with the same speed. The ratio of the maximum height attained by the two projectiles respectively is:
08Medium53×since 2003Q7803
The range of the projectile projected at an angle of 15∘ with horizontal is 50 m. If the projectile is projected with same velocity at an angle of 45∘ with horizontal, then its range will be
09Medium53×since 2003Q7804
The trajectory of projectile, projected from the ground is given by y=x−20x2. Where x and y are measured in meter. The maximum height attained by the projectile will be.
10Medium53×since 2003Q7805
Two projectiles A and B are thrown with initial velocities of 40m/s and 60m/s at angles 30∘ and 60∘ with the horizontal respectively. The ratio of their ranges respectively is (g=10m/s2)