when a boy plays a penalty kick he applies a force of 30N for a period of 0.05s. If the mass of the ball is 0.075KG, calculate the speed with which the ball move

How many discovered planets are there

Moving waves can be described either as a function of time or as a function of a. amplitude. b. frequency. c. speed. d. position.

Why is magnitude of average velocity not equal to speed?

Which factors affect friction between two solid surfaces? Check all that apply. the weight of the objects the surface area of the objects the shape of the objects the roughness of the objects' surfaces

In general, what happens to the density of a fluid as it becomes hotter?

When a cyclist rides past you on the street, this is an example of

Why are galaxies visible

I hockey puck slides across an ice rink more easily than it does across a rough concrete surface why is this

Sodium-22 Sodium-25 # of protons # of neutrons # of electrons

As the particles of a solid undergo sublimation, they A: lose energy B: move closer to one another C: change temperature D: move farther apart from one another