a ball of mass 0.5 kg is shot upwards from the floor with an inital speed of 2.0m/s. assume that there is no air resistance (take g= 10 m/s^2) A) by using the conservation of energy, calculate the maximum height reached by the ball B)by using the conservation of energy, calculate the speed of the ball when it reaches a height of 0.1 m

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

You can decrease the resistance of a length of wire by

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples