Q 77

Expert-verified
Found in: Page 291

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# a. Write a realistic problem for which this is the correct equation(s). b. Finish the solution of the problem, including a pictorial representation.

a) Car of mass 2000 kg is moving towards right with speed 5.0 m/s, then it collides with 1000 kg car that moves towards left with the speed of 4.0 m/s and then they moves together. Find the speed of combination after collision and its direction.

b) Speed of the combination is 2.0 m/s towards Right.

See the step by step solution

## Step 1. Given equation is

We need to find out a realistic problem for which this is the correct equation and have to find out the solution including pictorial representation.

## Step 2. Expressing the realistic problem of the given equation.

There are two masses that become together after the collision.

So the equation will be :

"Car of mass 2000 kg is moving towards right with speed 5.0 m/s, then it collides with 1000 kg car that moves towards left with the speed of 4.0 m/s and then they moves together. Find the speed of combination after collision and its direction"

## Step 3. Using the law of conservation of momentum to find the speed of the combination and its direction.

(Positive value means towards right)

Pictorial Representation,