An object is thrown upwards with a speed of 16 m/s. How long does it take it to reach a height of 7.0 m on the way up?
A) 0.52 s
B) 1.2 s
C) 2.4 s
D) 3.1 s
E) 4.2 s

Question

Quizplus · Accepted Answer

Using the kinematic equation $ h = v_i t - \frac{1}{2} g t^2 $, where $ h = 7.0 \, \text{m} $, $ v_i = 16 \, \text{m/s} $, and $ g = 9.8 \, \text{m/s}^2 $, solving for $ t $ gives approximately 0.52 s.

An Object Is Thrown Upwards with a Speed of 16