Acceleration Free Fall MCQ (Multiple Choice Questions) PDF Download

One of the characteristics of air resistance is

1. It does not oppose the motion
2. It decreases with the speed of the object
3. It decreases with the surface area
4. It increases with the density of the air

Air resistance is a

1. frictional force
2. gravitational force
3. backward force
4. balanced force

If a feather and an iron bar is released from a same height in a room without any air resistance. The first one to fall is

1. Iron bar
2. Feather
3. Both at the same time
4. They won?t fall

Gravitational force of earth is

1. 5.4 m s^-2
2. 6.9 m s^-2
3. 9.8 m s^-2
4. 11.1 m s^-2

Following that is not the characteristic of air resistance is

1. It always opposes the motion
2. It decrease with the speed of the object
3. It increases with the surface area
4. It increases with the density of the air