Question

A ball is launched horizontally at 150 m/s from a cliff. what is its vertical speed after 3 seconds?

Answer 1

A ball is launched horizontally at 150 m/s from a cliff. Its vertical speed after 3 seconds will be 30 m/s

Speed refers to a mathematical quantity that tells us how fast the position of an object is changing. Speed is a scalar quantity that is it only has magnitude.

Vertical speed is a type of speed in the vertical direction, that is affected by acceleration due to gravity.

Formula for vertical speed (v_f) = v_I + a*t

                                              v_f = 0m/s + (9.81m/s²)*(3s)

                                              v_f = 29.43m/s

                                              v_f = 30 m/s

The ball is being launched off horizontally from a cliff thus the only vertical force acting on the ball is acceleration due to gravity of 9.81m/s². Thus we have all the information to use the the kinematic equation: v_f = v_I + a*t.

To learn more about speed here

brainly.com/question/28224010

#SPJ4