an arrow is horizontally projected from the top of a tower with an initial velocity of 18m/s if it reaches the ground 7s later, calculate the height of the tower (take g=10m/s²)

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little