A particle has an initial horizontal velocity

Question

of 2.9 m/s and an initial upward velocity of
4.5 m/s. It is then given a horizontal accelera-
tion of 1.2 m/s2 and a downward acceleration
of 1.2 m/s2.
What is its speed after 4.9 s?
Answer in units of m/s

Answer 1

What is the direction of its velocity at this
time with respect to the horizontal? Answer
between −180� and +180�.
Answer in units of �