A bullet emerges from a barrel of length 1.2 m with a speed of \( 640 \mathrm{~ms}^{-1} \). Assu...

Channel:
PW Solutions
Subscribers:
445,000
Published on ● Video Link: https://www.youtube.com/watch?v=n8nStgyCaZc


Duration: 3:56
125 views
1

A bullet emerges from a barrel of length 1.2 m with a speed of \( 640 \mathrm{~ms}^{-1} \). Assuming constant acceleration the approximate time that it spends in the barrel after the bullet fired is:
a. \( 40 \mathrm{~ms} \)
ch 4 second
b. \( 4 \mathrm{~ms} \)
d. \( 0.4 \) second
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-06-15During discharging of lead storage battery, which of the following is/are true? (A) \( \mathrm{H...
2023-06-15In an organic compound of molar mass \( 108 \mathrm{~g} \mathrm{~mol}^{-1} \mathrm{C}, \mathrm{H...
2023-06-15Identify electron - donating groups in resonance among the following: (A) \( -\mathrm{CONH}_{2} ...
2023-06-15The reaction \(A(g)+B(g)\longrightarrow C(g)\) is an elementary reaction. In an experiment invol...
2023-06-15A bacterial infection in an internal wound grows as \( N^{\prime}(t)=N_{0} \exp (t) \), where th...
2023-06-15\( 0.7 \) moles of potassium sulphate is allowed to react with \( 0.9 \) moles of barium chlorid...
2023-06-15The minimum amount of \( \mathrm{O}_{2}(g) \) consumed per gram of reactant is for the reaction ...
2023-06-15Two conducting spheres of radii \( R_{1} \) and \( R_{2} \) are kept widely separated from each ...
2023-06-15A convex lens forms a real and inverted image of a needle at a distance of \( 30 \mathrm{~cm} \)...
2023-06-15A large tank filled with water to height h is to be emptied through a hole at bottom ratio oftim...
2023-06-15A bullet emerges from a barrel of length 1.2 m with a speed of \( 640 \mathrm{~ms}^{-1} \). Assu...
2023-06-15A particle is moving in a circle of radius \( r \) centred at \( O \) with constant speed \( v \...
2023-06-15The velocity-displacement graph of a particle is as shown in the figure. Which of the following ...
2023-06-15First step in taxonomy is
2023-06-15The pitch of a screw gauge having 50 divisions on its circular scale is \( 1 \mathrm{~mm} \). Wh...
2023-06-15Two metal plates having charges \( Q,-Q \) face each other at some separation and are dipped int...
2023-06-15A solid insulating sphere of radius R is charged uniformly. At what distance from its surface is...
2023-06-15Resultant of two vectors of math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn5...
2023-06-15The series combination of two batteries, both of the same emf \( 10 \mathrm{~V} \), but differen...
2023-06-15A horizontal jet of water coming out of a pipe of area of cross-section \( 20 \mathrm{~cm}^{2} \...
2023-06-15\( 10 \mathrm{~mL} \) of gaseous hydrocarbon on combustion gives \( 40 \mathrm{~mL}^{2} \) of \(...