Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

A bullet leaves a rifle with a muzzle velocity of 400 m/s. While accelerating through the

barrel of the rifle, the bullet moves a distance of 0.840 m. Determine the acceleration of the

How much time was taken for the bullet to leave the rifle? ithout that, acceleration cannot be found


The question states that 0.840 m is the distance travelled within the barrel. Therefore u = 0 m/s, v= 521 m/s. 
This means that a = (v^2 - u^2)/2s. 
This is a reformat of v^2 = u^2 + 2as 
a = (521^2)/(2 x 0.840) 
a = 161.57 m/s^2
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts