A projectile is thrown at an angle of 45° to the horizontal with a speed of 50 m/s. Taking g = 10 m/s2, the horizontal range of the projectile is:

A projectile is thrown upward at an angle of 60° with the horizontal. If the speed of the projectile is 20 m/s when its direction of motion makes an angle of 45° with the horizontal, find the initial speed of the projectile in m/s.

If a particle is projected with a velocity u1 so that its range on a horizontal plane is twice the greatest height attained, then its horizontal range is: