9.1 Momentum and impulse

Question 1

What is the equation to find momentum?

Answer 1

» Mass x velocity

Question 2

What is the unit of momentum?

Answer 2

» Kgm/s

Question 3

What type of quantity is momentum?

Answer 3

» Vector

Question 4

What is newtowns first last of motion?

Answer 4

» An object remains at rest or in uniform motion unless acted on by a force

Question 5

What are the effects if the object with constant momentum loses/gains mass?

Answer 5

» Velocity changes to keep the momentum constant

Question 6

What is newtons second law of motion?

Answer 6

» The rate of change of momentum of an object is proportional to the resultant force on it

Question 7

What is netwons 2nd law equation?

Answer 7

» F = ma

Question 8

What is the equation which links force to the change of momentum?

Answer 8

» Force = change of momentum/time
» F = (m(v-u))/t
» Which is also equal to F = ma

Question 9

What is the definition of 1 newton?

Answer 9

» The amount of force that gives an object of mass 1kg an acceleration of 1m/s^2

Question 10

What is the impulse of a force?

Answer 10

» It is the change of momentum of the object

Question 11

What is the equation for momentum?

Answer 11

» Impulse = Force x time
» Impulse = Change in mv

Question 12

What is the area under the line of a force-time graph represent?

Answer 12

» The change of momentum or the impulse of the force

Question 13

What is the unit of impulse?

Answer 13

» Ns
» Kgm/s