Momentum & Impulse: VectorImpulse

[huybinhs]

Homework Statement

A car with mass = 1470 kilograms is traveling north at a constant speed of 3.35 m/s. Take north to be the positive y direction.

The car takes 3.65 seconds to complete a righthand turn to the east (positive x direction), while maintaining a constant speed the whole time.

a)What is the x component of the impulse exerted on the car during the turn?

b)What is the y component of the impulse exerted on the car during the turn?

c) What is the magnitude of the average net force exerted on the car during the turn?

d) What is the direction of the average net force exerted on the car during the turn? (Enter smallest angle from the positive x direction.)

Homework Equations

P = mv

The Attempt at a Solution

a) I = Pf - Pi with Pi = mv = 1470 * 3.35 = 4924.5 N*s

how can I find Pf? Am i setting up the equation right?

 

[cepheid]

Homework Statement

A car with mass = 1470 kilograms is traveling north at a constant speed of 3.35 m/s. Take north to be the positive y direction.

The car takes 3.65 seconds to complete a righthand turn to the east (positive x direction), while maintaining a constant speed the whole time.

a)What is the x component of the impulse exerted on the car during the turn?

b)What is the y component of the impulse exerted on the car during the turn?

c) What is the magnitude of the average net force exerted on the car during the turn?

d) What is the direction of the average net force exerted on the car during the turn? (Enter smallest angle from the positive x direction.)

Homework Equations

P = mv

The Attempt at a Solution

a) I = Pf - Pi with Pi = mv = 1470 * 3.35 = 4924.5 N*s

how can I find Pf? Am i setting up the equation right?

You'll have two equations -- one for the x-direction and one for the y-direction.

What was the initial momentum in the x-direction? What about the final momentum in that direction?

Same thing for the y-direction.

These results give you the impulse in each of those directions.

 

[huybinhs]

Got it all ;)