Momentum, Impulse And Vertical Projectile Motion

Question 1

Momentum

Answer 1

Product of an obect’s mass and it’s velocity

Question 2

Newton’s Second Law in Terms of Momentum

Answer 2

The resultant force acting on an object is equal to the rate of change of momentum of the object in the direction of the net force

Question 3

Impulse

Answer 3

The product of the bet force acting on an object and the time the net force acts on the object

Question 4

Isolated System

Answer 4

System on which the net external force is zero

Question 5

Principle of conservative of Linear Momentum

Answer 5

The total linear momentum of a closed system remains constant in magnitude and direction.

Question 6

Projectile

Answer 6

An object upon which the only force acting is the force of gravity

Question 7

Safety considerations for momentum and impulse. i.e. Drawing back of hands to catch ball

Answer 7

This increases time over which force is exerted.
fnet is inversely proportion to time
Therefore the longer the impact time the less severe the injury

Question 8

Elastic Collision

Answer 8

A collision where the kinetic energy of the object is conserved. The sum of the kinetic energy of all the objects before the collision is equal to the sum of the kinetic energy of all the objects after the collision

Question 9

Inelastic Collision

Answer 9

Collision where kinetic energy of the objects is not conserved. Sum of the kinetic energy of all the objects before the collision is not equal to the sum of the kinetic energy of all the objects after the collision