The acceleration is 1.55 m/s^2 while is component that is parallel to the ground is 0.775 m/s^2.
The term acceleration is the rate of change of speed. Given that the distance covered is 35.0 m and the final velocity is 10.43 m/s it the follows that;
v^2 = u^2 + 2as
u = 0 because he started from rest
v^2 = 2as
a = v^2/2s
a = (10.43 m/s)^2/2 * 35.0 m
a = 1.55 m/s^2
The component of this acceleration which is parallel to the ground is;
ax = a sin θ
ax = 1.55 m/s^2 cos 60
ax = 0.775 m/s^2
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