force Mass Momentum

Question 1

Mass of a body

Answer 1

A measure of how difficult it is to accelerate that body

Question 2

Acceleration is inversely proportional to

Mass

Answer 2

1 Newton is the force that gives a mass of 1 kilo gram an acceleration of 1 m/s

Question 3

Force = mass X Acceleration

Answer 3

Weight- the weight of an object is the force of the earths gravity acting on it

Eight= mass X acceleration to due gravity

W = mg

Question 4

Force

Is directly proportional to acceleration

Measured in N newtons

Answer 4

Anything that causes the velocity of an object to change

Question 5

Momentum

Symbol= P

Answer 5

Mass X velocity

Question 6

Newton’s laws of motion

1, 2, 3

Answer 6

1) every body will remain in a state of rest or travelling with a constant velocity unless an unbalanced external force acts upon it
2) when an imbalance force acts on a body the rate of change of the body’s momentum is directly proportional to the force and takes place in the direction of the force F= ma
3) if a body A exerts a force on a body B, then body B exerts an equal and opposite five on A ie: action and reaction are equal and opposite

Question 7

F= ma

F = mv - mu
———
t

Answer 7

change in momentum/ time

F is DP to

Final momentum- initial momentum / time

F = mv - mu
———
t

A = v - u / t. Therefore F = ma ( mass X momentum)

Question 8

Principle of conservation of momentum

M1 U 1 + m2 U2= m1 v1 + m2 v2

Answer 8

In any interaction between two or more bodies the total momentum of the bodies before the interaction is equal to the total momentum after the interaction PROVIDED no external forces act on the system of bodies