Free Fall, Gravity, Air Resistance, and Projectiles

Front

What is free fall?

Back

Free fall is the motion of an object under the influence of gravitational force only, with no other forces acting on it, such as air resistance.

Front

What is the acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately 9.81 m/s².

Front

How does air resistance affect the motion of falling objects?

Back

Air resistance opposes the motion of falling objects, reducing their acceleration and terminal velocity.

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium prevents further acceleration.

Front

What factors affect the terminal velocity of an object?

Back

Terminal velocity is affected by the object's mass, shape, and the density of the fluid through which it is falling.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted on that mass by gravity.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) can be calculated using the formula: a = (final velocity - initial velocity) / time.

Front

What is the direction of the air resistance force acting on a falling object?

Back

The air resistance force acts in the opposite direction to the motion of the falling object, which is upward.

Front

What happens to the motion of an object when it experiences a net force?

Back

When an object experiences a net force, it will accelerate in the direction of that net force.

Front

What is projectile motion?

Back

Projectile motion is the motion of an object that is launched into the air and is subject to the forces of gravity and air resistance.