Physics CH 4 Linear Motion

Front

What is acceleration due to gravity (g)?

Back

Acceleration due to gravity (g) is the acceleration experienced by an object due to the gravitational pull of the Earth, approximately 9.81 m/s².

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken, expressed in units like km/hr.

Front

What happens to objects in a vacuum?

Back

In a vacuum, all objects fall at the same rate regardless of their mass, meaning they will hit the ground at the same time.

Front

What is the principle of conservation of energy in motion?

Back

The principle states that the total mechanical energy (kinetic + potential) of an object remains constant if only conservative forces are acting on it.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the relationship between speed and time for a freely falling object?

Back

The speed of a freely falling object increases linearly with time due to constant acceleration from gravity.

Front

What is the effect of air resistance on falling objects?

Back

Air resistance opposes the motion of falling objects, causing them to fall slower than they would in a vacuum.

Front

What is the significance of the initial velocity in projectile motion?

Back

The initial velocity determines the maximum height and range of the projectile.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity representing how fast an object moves, while velocity is a vector quantity that includes direction.

Front

What is free fall?

Back

Free fall is the motion of an object under the influence of gravity only, with no other forces acting on it.