A ball it thrown with an initial velocity Vo =(10i+5j)m/s when it reach the top of its trajectories neglecting air resistance what is its velocity and acceleration?
At the top of its trajectory, the velocity of the ball is purely vertical and its magnitude is equal to its y-component of the initial velocity:
Vy = 5 m/s
The acceleration of the ball is equal to the acceleration due to gravity, which is pointing downwards and has a magnitude of 9.81 m/s²:
a = -9.81j m/s² (since the negative sign indicates that the acceleration is in the opposite direction of the positive y-axis)
The velocity of the ball at any other point in its trajectory can be found using kinematic equations.