A child tosses a ball directly uoward .Its total tine in air is T .Its maximum height H. What is its height after it has after it has been in air a time T/4?

Abearing is designed to a reduce friction b. support a load c. guide moving parts such as wheels, shafts and pivots d. all of the above

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

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