You throw a ball upward with a speed of 14 m/s. What is the acceleration of the ball after it leaves your hand?

g = - 9.8 m/s²

Explanation:

Gravity is the only force pulling on any object in free fall. Gravity near earth's surface pulls with an acceleration g.

The acceleration of the ball is - 9.8 meter per sec square acting as deceleration when the ball left the hand after being thrown upwards.

Explanation:

The ball is thrown with a speed of 14 m/s and the moment it comes into the projectile, gravity starts to work on it. The gravity applies the uniform acceleration of 9.8 m/s^2.

This acceleration is in the form of deceleration [the negative acceleration] is termed as the deceleration. And here, the ball is thrown opposite to the gravity and hence the motion is against the gravity, the acceleration becomes - 9.8 m/s^2.