You are sitting on a bus moving at 50 km/h [E]

when you toss a ball in front of you and straight up
into the air. The ball reaches a height close to your
eyes. Will the ball hit you in the face? Explain.

1 answer

no

the bus is an "inertial reference frame"

the ball is moving , along with you , in the bus

tossing the ball perpendicular to the direction of motion of the bus
... doesn't change the ball's horizontal motion