physics chap 2

Question 1

define balance force

Answer 1

the resultant of all force acting on a body is 0

Question 2

define unbalanceforcese

Answer 2

if the resultant of all force acting on a body is not 0

Question 3

newtons first law of motion

Answer 3

an object remains in the state of rest or of uniform motion on a straight line unless compelled to change the state by an unbalanced force

Question 4

define inertia

Answer 4

it is the natural tendency of a body to resist change in its state of motion or rest

Question 5

define momentum

Answer 5

momentum is defined as the product of its mass and velocity

Question 6

newtons second law of motion

Answer 6

it states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of force

Question 7

newtons third law of motion

Answer 7

for every action, there is an equal and opposite reaction

Question 8

law of conservation of momentum

Answer 8

the total momentum of a system is conserved before and after the collision