# Finding Impulse and Velocity from Force vs. Time Graph

1. Oct 3, 2012

### MG5

Heres the graph.

Heres the problem

Mass of the object is 1.7 kg.

(a) Find the impulse of the force.

(b) Find the final velocity of the object if it is initially at rest.

(c)Find the final velocity of the object if it is initially moving along the x-axis with a velocity of
−1.9 m/s.

Wouldn't the velocity be the area under the graph be the velocity?

2. Oct 3, 2012

### SammyS

Staff Emeritus
No.

It's not an acceleration vs time graph.

3. Oct 4, 2012

### howie8594

Why don't you show us what you did and where you're stuck on a, b, and c.

4. Oct 4, 2012

### MG5

Don't even know where to start.

5. Oct 4, 2012

### SammyS

Staff Emeritus
Well, you could use the impulse-momentum theorem.

Or

How is the graph related to an acceleration vs. time graph?

6. Oct 4, 2012

### howie8594

If you want to find the impulse, it's force * time. Look at your graph again. It alone should be enough to find the impulse. The area of the graph does not represent the final velocity.