Sunday

December 21, 2014

December 21, 2014

Posted by **Vinitha** on Monday, June 11, 2012 at 4:06am.

- math -
**MathMate**, Monday, June 11, 2012 at 6:39amKinetic energy at velocity v

Ek(v)=Kv²

Since

Ek(20)-Ek(15)=10 j = K(20²-15²)=175K

we solve for K to get

K=10/175

Ek(12)=(10/175)*12² j

=8.2 j.

**Answer this Question**

**Related Questions**

science(check answers) - 2.how would the kinetic energy of a 12,000-kg train ...

science (check answers) - 4.how does the kinectic energy of a 10,000-kg train ...

science(1answer) - 4.how does the kinectic energy of a 10,000-kg train traveling...

science - please help me im stuck on this last one !! .A car driver accelerates ...

science (check new answer) - please check my answser .A car driver accelerates ...

Geometry - Joey has a toy car that is a 1:64 scale model of an actual car. (In ...

physics - A green 4 kg toy car with a speed of 5 m/s collides head-on with a ...

science - a 600 kg toy car moving at 3 m/s collides and hooks up with a 900 kg ...

Math - The supply and demand for a business manufacturing toy cars are given by ...

physical - what is the size and direction of the final velocity of the two cars ...