A ball thrown upward at 30 m/s will reach the ground after about
A) 1.0 s.
B) 2.0 s.
C) 6.0 s.
D) 8.0 s.

Question

Quizplus · Accepted Answer

To determine the time it takes for a ball thrown upward to reach the ground, we can use the formula for the time of flight under gravity, ignoring air resistance. The formula is $ t = \frac{2v}{g} $, where $ v $ is the initial velocity and $ g $ is the acceleration due to gravity (approximately $ 9.8 \, m/s^2 $). Plugging in the given values, $ t = \frac{2 \times 30}{9.8} \approx 6.12 $ seconds. Rounding to the nearest whole number gives us approximately 6 seconds.

A Ball Thrown Upward at 30 M/s Will Reach the Ground