Question

Kinematics!
Circular Motion!

Answer 1

Kinematics!
A projectile is thrown at an angle of 60 with the horizontal with a velocity of 20 m/s, with H being the highest point of its trajectory. Another projectile P is now forced to move along the same trajectory as that of the projectile such that its speed is continuously increasing. When the particle P is at H,|v(of particle P)|=20m/s,|acceleration of P|=50m/s^2, then acceleartation vector a at H equals??(take g=10)
Ans is (30i-40j)