# Linear Momentum: Conservation of Momentum

### Problems

Problem :

What is the impulse of a force of 10 N acting on a ball for 2 seconds?

Problem :

Consider the last problem. The ball weighs 2 kg and is initially at rest. What is the velocity of the ball after the force has acted on it?

Problem :

A particle has linear momentum of 10 kg-m/s, and a kinetic energy of 25 J. What is the mass of the particle?

Problem :

A 2 kg bouncy ball is dropped from a height of 10 meters, hits the floor and returns to its original height. What was the change in momentum of the ball upon impact with the floor? What was the impulse provided by the floor?

Problem :

A ball of 2 kg is thrown straight up into the air with an initial velocity of 10 m/s. Using the impulse-momentum theorem, calculate the time of flight of the ball.

## Take a Study Break

### Star Trek gets SEXY

Chris Pine and Zoe Saldana heat up the red carpet!

### Are you afraid of relationships?

Auntie SparkNotes can help!

### Sexy starlet style

See every single look from the Met Gala!

Before the fame!

### 9 Scientific Inaccuracies in Iron Man 3

Click to see what they got wrong.

### Top 10 Predictions Sci-Fi Got WRONG

So wrong, they're WRONG.

### The 15 Most Awesome Robots, Ever

These Robots Rock!

### If You Like Game of Thrones...

...Then you'll LOVE these books!

## The Book

### Read What You Love, Anywhere You Like

Get Our FREE NOOK Reading Apps