1. A car starts from rest and attains a speed of 50 m/s in 15 seconds. a. How far has the car travelled in 15 seconds? b. What is the speed of car if it travels 567 meters? 2. A horse travels 65 km/hr with a distance of 5.98 km . a. How long does the horse travels? b. What is the new speed of the horse if he travels twice his time travelled?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Solve for the following problems. Show your solution Speed 1. A car starts from rest and attains a speed of 50 m/s in 15 seconds. a. How far has the car travelled in 15 seconds? b. What is the speed of car if it travels 567 meters? 2. A horse travels 65 km/hr with a distance of 5.98 km . a. How long does the horse travels? b. What is the new speed of the horse if he travels twice his time travelled? Velocity 1. It is 21,000 kilometers around the earth and the earth rotates in 24 hrs. How fast is it rotating? 2. Jessica jogs on a path that is 25 kilometers long to get to a park that is south of the jogging path. If it takes Jessica 2.5 hours then, what is the velocity? 3. How long will it take light moving at 300,000 km/s to reach us from the sun? The sun is 150,000,000 km from earth. 4. An auto travels going to Roxas City at a rate of 25 km/hr for 0.045 hour , then at 50 km/hr for 0.056 hr, and finally at 20 km/hr for 0.015 hour. Find the total distance covered in km and the velocity for the complete trip. Acceleration 1. The brakes of a car provide an acceleration of – 5 m/s2. How long will it take for a car travelling at 20 m/s to stop? 2. A jeepney slows down from 10 m/s to 4 m/s in 6 s. What is the distance covered? 3. A jet plane starts from rest and accelerate at a constant 3 m/s2 for 30 s before leaving the ground. a. How far did it move along the ground? b. How fast was it going when it took off?
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