Dave needs to get groceries from the store, which is a distance D = 1.7 km east of his house. Dave rides his bike to the store at a constant speed of v1 = 6.8 m/s, and rides back to his house at the slower speed of v2 = 2.2 m/s. 1. how long dose dave took to reach the store.

Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

What is the difference between electrically neutral objects and electrically charged objects

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?