Question

A rocket with a lift-off mass 3.5 x 10⁴ kg is blast upward with an initial acceleration of 10m/s². Then, the initial thrust of the blast is

(a) 1.75 × 10⁵ N

(c) 7.0× 10⁵ N

(b) 3.5 × 10⁵ N

(d) 14.0 × 10⁵ N