Hence the maximum height attained by the body is 144 ft. ASSESSMENT 1. The motion of a particle moving on a coordinate line is given by s = +3 - 6+2 +9t +3 Describe and diagram the rectilinear motion for t 2 0. 2. A ship A is 20 km west of another ship B. If A sails east at 10 km/hr, find the rate of change of the distance between them at the end of - hr. 3. The radius of a right circular cone is increasing at the rate of 6 cm/ sec while its altitude is decreasing at 3 cm/ sec. Find the rate of change of its volume when its radius is 8 cm and its altitude is 20 cm. 4. A body is thrown vertically upward from a point on the ground. If it attains a maxmimum height of 400 meters, find its initial velocity. 5. Find the values of t for which the velocity is increasing a. s = t3 - 6t2 + 4 b. s = t4 - 8+3 +5 Sit Dominus Deus benedieat corum qui sapientiam guaerere"