1. An object falling freely, toward the surface of the earth, has a velocity, that is ____

2. Suppose an object is falling freely. During the 2nd second the object falls ____ distance than in the second before

3. A physics Book rests on a 1,8 m high bookshelf. It takes ____ s for the book to fall to the floor. (Assume there is no air resistance and g=10m/s2 )

4. An apple is dropped from a tree ____ m tall and It takes 0,7s s for the apple to reach the ground. (Assume there is no air resistance and g=10m/s2 )

5. A stone falls from a gorge. Its velocity after 6 seconds of falling is ____ m/s (Assume there is no air resistance and g=10m/s2 )

6. A watermelon falls from a high building and hits the ground 5 seconds later, the distance that it fell is ____ m (Assume there is no air resistance and g=10m/s2 )

7. A ball falling freely near the surface of the earth has an acceleration that is ____

8. Obelix drops a menir , from a bridge 20 meters tall , from rest, downwards to a roman soldier 2m high . The strike velocity is ____ m/s approximately

9. An apple falls from the the Petronas Towers, in Kuala Lumpur, Malaysia (450 meters height ) and takes ____ seconds approximately to reach the ground.

1. A rock and a feather are dropped at the same time, from the same height, in a vacuum.The rock will reach the ground earlier.

2. Velocity and acceleration are both vectors

3. The direction of the acceleration due gravity is perpendicular to the radius of the earth

4. The symbol g stands for the weight of an object

5. Free fall occurs only in a vacuum

6. The value of g varies at different places on the earth

7. Free fall is a motion with constant acceleration

8. Gravity is not a force, it is an acceleration

9. In free fall motion we assume that air resistance is negligible

10. The value of g increases with increasing altitude above the Earth’s surface

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