Question

A bullet it shot vertically into the air with an initial velocity of 109.8 m/s. Calculate the time (in seconds) taken for the bullet to reach its maximum height.

Take gravitational acceleration to be 9.81 m/s2.

Answer 1

Answer on Question #51494, Physics, Mechanics | Kinematics | Dynamics

Question:

A bullet it shot vertically into the air with an initial velocity of 109.8 m/s. Calculate the time (in seconds) taken for the bullet to reach its maximum height.

Take gravitational acceleration to be 9.81 m/s².

Answer:

A bullet will reach maximum height when $v = 0$:

$$v = v_0 - g t = 0$$

where $v_0$ is initial velocity, $g$ is gravitational acceleration, $t$ is time.

$$t = \frac{v_0}{g} = \frac{109.8 \frac{m}{s}}{9.81 \frac{m}{s^2}} = 11.19 \, s$$

Answer: 11.19 s

http://www.AssignmentExpert.com/