Answer: The ball will land at 19.6 m
Step-by-step explanation:
To calculate the horizontal range of the ball, we use the formula:

where,
v = velocity of the ball = 14 m/s
= angle at which the ball is thrown = 51°
g = acceleration due to gravity =

Putting values in above equation, we get:

Hence, the ball will land at 19.6 m