Asprinter had a mass of 80 kg and a kinetic energy of 4,000 j. what is the sprinters speed?

In physics the desire of an object to keep doing what it is doing is termed?

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)

How are positive ions different from neutral atoms