Introduction To Moment

Momentum

ITS QUANTITY OFMOTION DUE TO MASS AND VELOCITY

Defined as a Product of mass and velocity.

Formula

𝑃=𝑚𝑣

Unit

𝐾𝑔𝑚/𝑠

Vector Quantity

It has the same direction as the velocity of the object.

More momentum means its harder to stop the object

Mass

uHigher the mass higher the momentum

uLesser the mass lessor is the momentum

Velocity

uHigher the velocity higher the momentum

uLower the velocity lower will be the momentum

Examples of high momentum

Truck

uSmaller velocity

uHigher mass

uHarder to stop

Bullet

uHigh velocity

uLower mass

uHarder to stop

Same speed different mass

uWe can stop a base ball coming at 20m/s

uWe can not stop car coming at 20m/s

Which one has more mass

A hammer of 3kg swung at speed of 1.5m/s

uApply 𝑃=𝑚𝑣

A hammer of 4kg swung at speed of 10.9m/s

uApply 𝑃=𝑚𝑣

Practice Question

uWhat is the momentum of a bird with a speed of 15m//s and mass of 18g?

uA golf ball at 16m/s and a bass ball at 7m/s. The mass of a golf ball is 0.045kg and the mass of a baseball is 0.14kg.

uWhich one has greater momentum?