First slide

The 3 equation for uniform acc

Question

A bullet emerges from a barrel of length 1.2 m with a speed of 640 ms^-1. Assuming constant acceleration, the approximate time that it spends in the barrel after the gun is fired is

Easy

A

4 ms
B

40 ms
C

400 s
D

1 s

Solution

$\begin{array}{l} S = (\frac{V + v}{2}) t \\ 1 - 2 = (\frac{640}{2}) t \\ t = 3 .75 \times 10^{- 3} = 4 ms \end{array}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App