Finals crossword puzzle

3. acronym of free-body diagram
4. plural of momentum
5. defined as a body on which the distance between two points never changes whatever be the force applied on it.
6. ____________ of restitution (ϱ)
7. ( ἠ ); output work over input work
9. a contradiction of the Direct Impact
10. a velocity of a body ω, expressed in rad / s
11. m_A v_A-∫▒〖P dt= m_A u〗; formula for period of ________
14. rate at which work is done
16. collision between two bodies which occurs during a small time interval
17. the quantity mass times volume is known as what
18. scalar quantity; has magnitude and sign but not direction

1. impact for which one or both of the bodies move along the line
2. is the force that causes everything that goes up to fall back down to Earth.
6. _________ of energy equals T_1+ V_1= T_2+ V_2
8. unit for joule per seconds
12. mass × acceleration
13. 1 Newton-meter equals to _______
15. The greater the ______ effect, the greater the acceleration, momentum change, and impulse.
16. the quantity Force times time is known as what