A negatively charged particle of mass m= 1.17x10-24 kg and q = -3.20x10-19 C is immersed in a uniform 2.00 x 103 N/C electric field pointing in the

negative x direction. The particle is initially traveling antiparallel to the

uniform electric field at a speed of 2.00x104 m/s. Assume that the

gravitational force acting on the particle is negligible compared to the

electrostatic force acting on it. Consider a period of time during which the

particle travels a distance of 100 mm antiparallel to the uniform electric

field.​

we need answer choices

heats surface water up

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

the maxium height is 34m/s