Which arrow correctly shows the flow of heat? (I need help quick!)

Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce