Which of the following training methods brings digital elements into the physical world to enhance the information and context that people experience?
a. chatbots
b. augmented reality
c. artificial intelligence
d. adaptive learning

Augmented Reality.

Explanation:

The chatbot is  a software application like whats app that is used to do online chat with texts or speech.

Artificial Intelligence refers to making machine to think and work like humans  by simulating human intelligence

Adaptive learning is the online education that is used to improve the reading material to students

Hence Augmented reality is the training method to bring digital elements into physical world to enhance the information and context that people experience.  

Example is Google 3d animals.

the velocity you are looking for is made up of two parts: horizontally velocity, vh, and its vertical velocity, vv. the actual velocity of the ball will be these two parts added together, and because velocity is a vector then they will need to be added vectorially.  

neglecting air resistance etc etc.,  

the horizontal velocity component will be constant (because there is no accelerating force in the horizontal direction.  

vh = 8 ms-1  

the vertical velocity component has an accelerating force: 'g'.  

using v = u +at where a = g = 9.81 ms-2.  

the vertical component of velocity, vv = 0 + gt = vv =9.81 x 2  

vv = 19.62 ms-1 . the zero appears because the virtical component of velocity at time t=0 is zero. remember, the ball was thrown horizontally.  

how fast it will be moving (it actual path (being a parabola )) will be the vector sum of these two.  

adding vectorally gives: -  

v = sqr root (8^2 + 19.62^2) = sqr root(64+384.9) = 21.18 or 21.2 ms-1

i think the answer is a, hope this is right, that would be my best guess.