Askier is traveling at 1 m/s down a hill. then 10 s later is traveling at 2.5 m/s. what is the acceleration of the skier?

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton

Which wave is the result of amplification and produces a louder sound