# Use the impulse-momentum theorem to find how long (number of sec.) a stone falling straight down takes to increase its speed from 4.5 m/s to 12.5 m/s.

1. A sled and rider, gliding over horizontal, frictionless ice at 4.1 m/s, have a combined mass of 70 kg. The sled then slides over a rough spot in the ice, slowing down to 2.6 m/s.
What impulse was delivered to the sled by the friction force from the rough spot?

2. Use the impulse-momentum theorem to find how long (number of sec.) a stone falling straight down takes to increase its speed from 4.5 m/s to 12.5 m/s.

3. Laura, who’s mass is 35 kg, jumps horizontally off a 55 kg canoe at 1.5 m/s relative to the canoe. What is the canoe’s speed just after she jumps?

4. A spaceship of mass 2.2×106 kg is cruising at a speed of 5.4×106 m/s when the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 5.2×105 kg, is blown straight backward with a speed of 2.5×106 m/s. A second piece, with mass 7.7×105 kg, continues forward at 1.3×106 m/s.

A. What is the speed of the third piece?
B. What is the direction of the third piece? (straight forward or straight backwards)

5. An 8.5 kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. He walks along the length of the canoe at 0.46 m/s, relative to the water, and the canoe simultaneously moves in the opposite direction at 0.17 m/s.
What is the mass of the canoe (in kg)?

Assignment help

### Place your Order and Get 25% Discount

Get 25% Discount!
Pages (550 words)
Approximate price: -

Why We Are The Best Assignment help service

Best Assignment Writing Services

We make certain that all of your directions are followed to the letter.  S elect your academic level: high school, university/college, or professional, and an expert with the appropriate degree will be assigned to you.

Professional Academic Writers with Years of Experience

We have a group of assignment writing experts boasting academic and corporate writing skills. Many are native speakers who can assist you with any assignment.

Unlimited and Free Revisions

Submit your order for revision if you believe we missed something. After receiving the finished document, you get 10 days to send the order for evaluation. You can do this by signing into your private account or contact our customer service.

Money-back Guarantee and Quick Delivery

Papers are delivered on time. We may approach you about extending the deadline if we ever need extra time to perfect your paper. If you are unable to give us more time, a full refund is provided.

Confidential and Originality

We utilize a variety of plagiarism detection methods to verify that all of the materials you get are clear from plagiarism. All statements in the paper are carefully reviewed by our editors. In addition, we guarantee complete anonymity in our services.

Our customer service representatives are accessible 24 hours every day, seven days every week, and are dedicated to providing the best possible service. Please contact us when you need assistance.

Services

There's no need to finish your paper late at night. We can handle the paper as you sleep. We provide a wide range of assignment help.

## Assignment Writing Service

You are allowed to select your educational level and paper type at affordable prices, regardless of what type of assignment you require or how urgently you need it. We handle all of your paper requirements and provide a customer service system that is available 24 hours a day, seven days a week..

An admission essay is a written statement submitted by an applicant, most commonly a prospective student applying to a college or university. You can rest assured that we will produce a quality admission essay..

Our professional essay writers and editors polish your document by making the essential modifications. We also structure your document by citing sources accurately and providing reference lists in APA, Harvard, MLA, Chicago / Turabian, and other formats..

Revision/Improve my paper

You can request a review if you believe your paper could be better. Your essay will be reviewed by the expert or handed to an editor. This option can be used as many times as you want. This is provided without extra charges since we want you to be entirely satisfied..