Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: Rs.

There are no items in this cart.
Continue Shopping
Nitin Gupta Grade: 11

10g bullet is fired from a 5 kg gun with a velocity of 400 m/s.What is the speed of the recoil.

Is the answer -- 0.8m/s

If not then provide the correct solution

7 years ago

Answers : (4)

suryakanth AskiitiansExpert-IITB
105 Points

Dear nitin,

Your answer is correct

Vg = - (mb/mg)* Vb

    = - ((10* 10^(-3))/5) * 400

    = - (4/5)

    = - 0.8 m/s

Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.

All the best.

Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..


Askiitians Expert

Suryakanth –IITB

7 years ago
aditya suman
39 Points

the answer 0.8m/s is correct.

7 years ago
shreyas ramoji
19 Points

it is correct, 

according to law of conservation of momentum,


v2 = m1v1/m2

v2 = (10x10-3)(400)/5

v2 = (0.01x400)/5

v2 = 4/5 = 0.8 ms-1


7 years ago
vikas askiitian expert
510 Points

your ans is corect

 from conservation of momentam

  M1.V1 + mv2 =0



7 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete Physics Course - Class 12
  • OFFERED PRICE: Rs. 2,756
  • View Details
  • Complete Physics Course - Class 11
  • OFFERED PRICE: Rs. 2,968
  • View Details

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!! Click Here for details