The horizontal and vertical components of the initial velocity of a football are 16 m/s and 20 m/s respectively.If there is no air,how long does it take the football to reach the top of its trajectory?
A)1.0 s
B)2.0 s
C)3.0 s
D)4.0 s
E)5.0 s

Question

Quizplus · Accepted Answer

The time taken by the football to reach the top of its trajectory can be found using the formula:
time = vertical component of initial velocity / acceleration due to gravity
= 20 m/s / 9.81 m/s^2
≈ 2.0 s (rounded to one decimal place)

The Horizontal and Vertical Components of the Initial Velocity of a Football