Lecture 18 - Linear Momentum

Question 1

what is linear momentum?

Answer 1

• the mass of an object multiplied by its velocity
• M = mv

Question 2

how is force related to linear momentum?

Answer 2

• force is the time rate of change of linear momentum

Question 3

what is linear impulse?

Answer 3

• a quantity of force times time
• a vector

Question 4

how do we change direction while performing activities?

Answer 4

• change the angle of push (direction of momentum)
• larger force is required at higher momentum
• length of vector also matters

Question 5

how does linear mass change with respect to impulse?

Answer 5

• the linear impulse remains the same
• mass x velocity (so if the ball is isolated, velocity is higher, once caught, velocity decreases because mass is increased)