Please solve these 2 question in details and explaination. I know the answer but not sure how to do.

1. Find the curvature of the plane curve given by 4x2 + 492 - 16 x - 49= 0 Answer : 219 . The distance travelled ( in metres ) along a space curve ( at time + ( in seconds) is given by S = 4t' + It"+ 16 In(4t -2). Find the Tangential component of the acceleration ap (in m/s 2 ) alt= 1. (Answer: - 26)