Projectile Motion Formulas Ground to ground

 

A particle is projected from level ground, Assuming projection point as origin, x-axis along horizontal y-axis along vertically upwards. if particle moves in xy plane and its path given by y=3x-2x^2 where a and b are positive constants.

 

A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shorter possible path in 15 min. The velocity of the river water in km/h is

 

Class 11 | Physics | Motion in a plane | NCERT 4.32

 

Class 11 | Motion in a plane | A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the net acceleration of the cyclist on the circular turn?

 

Class 11 | Motion in a Plane | A fighter plane flying horizontally at an altitude of 1.5 km with speed 720 km/h passes directly overhead an anti-aircraft gun. At what angle from the vertical should the gun be fired for the shell with muzzle speed 600 m s–1 to hit the plane? At what minimum altitude should the pilot fly the plane to avoid being hit? Take g = 10 m/s^2

 

Class 11 | In a harbour, wind is blowing at the speed of 72 km/h and the flag on the mast of a boat anchored in the harbour flutters along the N-E direction. If the boat starts moving at a speed of 51 km/h to the north, what is the direction of the flag on the mast of the boat?

When the velocity makes an angle 30° with the horizontal, the kinetic energy of the body will be K/2 K/3 2K/3 3K/4 Class 11 Vector Projectile Motion

 

A ball rolls off the top of a stairway with a initial velocity u m/s. If the steps are h metre high and its widebis d metre. That the ball will hit the edge of the nth stair, then find relation of n with h,B and u