1. A car covers a distance of 30 miles in 1/2 hour. What is its speed in miles per hour and in feet per second? 2. An eastbound car travels a distance of 40 m in 5 s. Determine the speed of the car. 3. A car starts from rest and reaches a speed of 30 miles per hour in 8 seconds. What is its acceleration?

1. A car covers a distance of 30 miles in 1/2 hour. What is its speed in miles per hour and in feet per second? 2. An eastbound car travels a distance of 40 m in 5 s. Determine the speed of the car. 3. A car starts from rest and reaches a speed of 30 miles per hour in 8 seconds. What is its acceleration?

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)...

See similar textbooks

Similar questions

6. A train is moving with a constant speed. The train moves 60 meters for every 1.5 seconds that elapses. a. Assume that we get 40 by dividing 60 by 1.5. What is the name that is commonly given to a quantity represented by this number 40? b. To denote the quantity completely, what additional information must be given besides the number 40? c. How would you interpret the number 40 in this instance? Your answer should mention distance and time. d. Use your interpretation (not algebra) to find the distance the train moves in 2.5 seconds.
1. What is the speed of the car for the first 2 second? 2. What is happening to the car from 4 to 6 seconds? 3. True or False: the car is accelerating from 2 to 4 seconds?
3. A body moves in a straight line according to this equation of motion: s(t) = 10t² - 4t + 8, where t is measured in seconds and s in meters. a. What is its position at the end of 5 sec? b. What is the equation for its velocity v at any time t? c. What is its velocity v at the end of 5 seconds? d. What is the equation for its acceleration a at any time t? e. What is its acceleration at the end of 5 seconds?
2. A car initially moving at 20 m/s slows down to a speed of 5 m/s in 5 s. What is its acceleration? How long will take the car to come to a stop?
Q11. Polar bears are strong swimmers and can swim as long as 10 hours without rest. If a polar bear swims with an average speed of 2.6 m/s, what is the total distance it can swim in 10.0 hours? Give your answer in km.
The speed of an object undergoing 9. constant acceleration increases from 8.0 meters per second to 16.0 meters per second in 10. seconds. How far does the object travel during the 10. seconds? (1) 3.6 x 102 m (2) 1.6 x 102 m (3) 1.2 x 102 m (4) 8.0 x 10 m
2. You start out by driving 247 miles south in 2 hours and 55 minutes, and then you stop and park for a while. Finally, you drive another 103 miles north in 4 hours and 29 minutes. The average velocity for your entire trip was 15.57 miles per hour to the south. How much time did you spend parked? 1 hours 51 minutes 3 hours 42 minutes 0 hours 55 minutes 9 hours 15 minutes
11. A truck covers a distance of 40.0 meters in 8.50 seconds while smoothly slowing down to a speed of 2.80-m/s. (a) What was the initial speed of the truck? (b) What acceleration did the truck undergo while slowing to its final speed? Answers: (a) 6.61 m/s (b) -0.448 m/s²
9. A car with its brakes applied has an acceleration of -1.2 m/s˄2. If its initial velocity is 10 m/s, the distance the car covers in the first 5 seconds after the acceleration begins is A. 15 m B. 32 m C. 35 m D. 47 m 12. A train starting at 30 km/h travels a distance of 21 km in 18 min. Determine the acceleration of the train at this instant. A. 0.0865 m/s˄2 B. 0.0206 m/s˄2 C. 0.3820 m/s˄2 D. 0.0043 m/s˄2 13A stone is dropped from a cliff. After it has fallen 30 m, the magnitude of its velocity is approximately A. 17 m/s B. 24 m/s C. 44 m/s D. 588 m/s Answer the following, i only need the letter of correct answer.
11. A Lamborghini accelerates uniformly from rest to a speed of 100 m/s over a distance of 50 m. Determine the acceleration of the of the sports car. 12. SPACEX MARS Rocket-powered sleds are used to test the human response to acceleration. If a rocket- powered sled is accelerated to a speed of 666 m/s in 6.66 seconds, then what is the acceleration and what is the distance that the sled travels? 13. A JET accelerates down a runway at 6.90 m/s²for 30.31 s until is finally lifts off the ground. Determine the distance traveled before takeoff.
2. Frankie and Rosie take a trip in a car from one town to the next. During the trip several different average speeds are driven based on traffic. Frankie drives for 16.4 miles at 22.0 m/s, 14.5 miles at 26.0 m/s, and 30.2 miles at 18.0 m/s. As part of this trip Frankie and Rosie stop to eat dinner at a diner for about 35.0 minutes. Calculate the total time for the entire trip in minutes. o straight portion of a track
4. A jogger warms up by running 350 meters east at an average speed of 3.8 m/s, then running west 240 meters at an average speed of 4.2 m/s. a. How much time does the first part of the trip take? b. How much time does the second part of the trip take? c. How long does the entire trip take? d. What is the total distance for the entire trip? e. What is the magnitude of the jogger's displacement for the entire trip? f. What is the average speed for the entire trip? g. What is the magnitude of the jogger's average velocity for the entire trip?