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? Neglect air resistance.
A)0.52 s
B)1.2 s
C)2.4 s
D)3.1 s
E)4.2 s

Question

Quizplus · Accepted Answer

To find the time it takes for the object to reach a height of 7.0 m, we can use the equation of motion under constant acceleration due to gravity (g = 9.8 m/s^2). The equation is $y = v_0t - \frac{1}{2}gt^2$, where $y$ is the height, $v_0$ is the initial velocity, $g$ is the acceleration due to gravity, and $t$ is the time. Rearranging for $t$ when $y = 7.0 m$ and $v_0 = 16 m/s$, we find that $t$ is approximately 0.52 seconds.

An Object Is Thrown Upwards with a Speed of 16