Biomechanics: Force + Momentum + Impulse + COR + MOI + AM

Impulse is _____the change in momentum

• Greater than

• Equal to

• Less than

• Always double

The momentum of an object is defined as the object's:

• force time the time interval
• mass times its acceleration
• mass times its velocity
• velocity times the time interval

The formula for force is

• mass x acceleration

• mass x momentum

• mass x velocity

• mass x impulse

Select the correct information relating to Newtons Second Law

• states 'the rate of change of acceleration to a body is proportional to the force applied to it and inversely proportional to the mass of the object'

• states a 'body continues in its state of rest or state of motion unless acted upon by a force'

• can be expressed mathematically as F = Mass x Acceleration

• states 'for every action there is an equal an opposite reaction'

Select the INCORRECT statement regarding inertia

• it can be referred to as a body’s resistance to change it’s state of motion

• Newtons second law is commonly referred to as the 'Law of inertia

• Is directly proportional to its mass (more mass = more inertia)

• the greater the inertia, the greater the force need to change motion/start movement

If you increase the mass on an object, its acceleration

• decreases
• stays the same
• also increases
• stops

Objects with greater _________ also have greater inertia.

• speed
• mass
• temperature
• friction

The law of inertia (Newton’s First Law) applies

• to both moving and nonmoving objects
• only to moving objects
• only to objects that are not moving

Which has more momentum: an F1 car just prior to starting a race or a bike moving at 15 kph?

• car

• bike

• they are equal

• cannot determine using the info provided

According to the conservation of momentum, when two objects collide, the momentum before is ____________ the momentum_.

• more than

• less than

• equal to

• unrelated to