Question

can i ask a physics question pls .......

Answer 1

no!

Answer 2

:p

Answer 3

y

Answer 4

i have urgent problem

Answer 5

u can ask,but no guarantee for the solution :)

Answer 6

my question is:
If the momentum of a moving object is increased by 100%. Than the Kinetic energy of that object will be increased by :

Answer 7

p = mv = momentum

Answer 8

K = kinetic energy = (1/2)mv^2

Answer 9

if we double momentum, that means instead of p = mv , we have p=2mv

Answer 10

now , p = 2K/ v

Answer 11

so K = pv/2

Answer 12

wait, think I went round in a circle :|

Answer 13

but its just playing with equations, and ratios

Answer 14

KE = 1/2* mv^2
= 1/2* p* v

Answer 15

I think we can safely assume that all the in increase in momentum is due to velocity, not a change in mass

Answer 16

that makes it much easier

Answer 17

i guess kinetic energy would be doubled

Answer 18

so we essentially double our velocity

Answer 19

which quadruples our kinetic energy

Answer 20

we square velocity in the equation

Answer 21

ie times by 4

Answer 22

bad explaination

Kinetic energy of object mass m, velocity v: = (1/2) m v^2

Kinetic energy of object mass m , velocity 2v : = (1/2) m (2v)^2 = (1/2) m v^2 (4) = 4K