During the time a 2.0 kg projectile moves from its initial position to a point that is displaced 20 m horizontally and 15 m above its initial position, how much work in J is done by the gravitational force on the projectile?

294J

Explanation:

The work done by gravity is independent of the horizontal distance. It is only dependent on the vertical height of 15m above its initial position.

The work done against gravity is given by

Given;

m = 2.0kg

Hence;

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j