Question

A body is projected horizontally from a height of 78.4m with a velocity 10 m/s. Its velocity at 3 seconds is (g = 10 m/s)[Take direction of projection on î and vertically upward direction on j] [ ] A) 101-30) B) 101+30 C) 201-30) D) 10+10/3] A ball through horizontally with velocity V from the top of a tower of heighth reaches the ground in i seconds. If another ball of double the mass is thrown horizontally with velocity 3V from the top of another tower of height 4h, it reaches the ground in [ 1 ] 31 1 A) B) C) 41 D) 20 4 2. The range of a projectile, when launched at an angle of 15º with the horizontal is 1.5 km. The additional horizontal distance the projectile would covers when projected with same velocity at 45° is [ ] A) 3 Km B) 4.5 Km C) 1.5 Km D) 2.5 Km​

Answer 1

Nice questions

Explanation:

Abcdefghijklmnopqrstuvwxyz