Biomechanical Principles

A forward tumble in gymnastics is an example of

• linear motion

• angular motion

• curvilinear motion

• straight line motion

Linear motion occurs

• only in a straight line

• around an axis

• only in a curved path

• both straight line and or a curved path

Force

• F=MXA

• F=M/A

• F=IXT

• F=MI X A

Inertia

• is the rate of change of an objects position

• determines that rate of angular velocity

• is the resistance of a body to change its state of motion

• is directly proportional to velocity

P = M X V relates to

• velocity

• momentum

• force

• linear motion

A baseball pitch is an example of

• simultaneous force summation

• external force production

• sequential force summation

• Impulse

When two bodies collide, the combined momentum of the two bodies remains the same. This is an example of

• sequential force summation

• conservation of momentum

• simultaneous force summation

• Newton's third law of action/reaction

Angular momentum is a product of

• moment of inertia and mass

• moment of inertia and weight

• moment of inertia and velocity

• moment of inertia and force

'choking' a cricket bat will

• increase angular velocity

• decrease angular velocity

• increase the moment of inertia

• is an example of a second class lever

As a diver comes out of the tuck position, they extend their limbs away from the mass of the body. This

• decreases the moment of inertia

• increases angular velocity

• angular velocity remains constant

• increases the moment of inertia