2.An object is placed 7.0 cm away from a converging lens with a focal length of 7.0 cm. Find the distance to the image in the following lens problems and state whether the image is virtual or real AND whether it is upright or inverted.

3.An object is placed 65 mm away from a diverging lens with a focal length of 30. mm. Find the distance to the image in the following lens problems and state whether the image is virtual or real AND whether it is upright or inverted.

4.An object is placed 12 cm away from a diverging lens with a focal length of 6.0 cm. Find the distance to the image in the following lens problems and state whether the image is virtual or real AND whether it is upright or inverted.

connect the batteries in series and hope

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.