Step-by-step explanation:
Given that,
Position of the particle at t = 0,

Velocity of the particle at t = 0

Acceleration of the particle,

Solution,
(a) Let v is the velocity at t = 10 s. Using the equation of kinematics as :



(b) Let y' is the position at t = 1 s. Again using second equation of kinematics as :



(c) Magnitude of y',

|y'| = 21.69 meters
Direction of the y',



Hence, this is the required solution.