Several particles are thrown from a point in various directions but with the same initial speed vₒ…

Q: Several particles are thrown from a point in various directions but with the same initial speed vₒ. At any subsequent time t before they reach the ground, they lie on the surface of

(a) parabolic

(b) sphere

(c) ellipsoid

(d) straight line

Click to See Answer :
Ans: (b)