A football is kicked at 18 m/s at an angle of 28o. How long is the football in the air before it strikes the ground? 0.86 s

1.2 s

1.7 s

7.3 s

Explain vector addition, triangle method and parallelogram method

In the first law of thermodynamics, triangle e=q-w, what does q stand for

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final