Part A You are driving home from school steadily at 94 km/h for 180 km. It then begins to rain and you slow to 65 km/h instantly. You arrive home after driving 4.0 hours. How far is your hometown from school? Express your answer using two significant figures. d = km Submit Request Answer Part B What was your average speed? Express your answer using two significant figures. km/h

Part A You are driving home from school steadily at 94 km/h for 180 km. It then begins to rain and you slow to 65 km/h instantly. You arrive home after driving 4.0 hours. How far is your hometown from school? Express your answer using two significant figures. d = km Submit Request Answer Part B What was your average speed? Express your answer using two significant figures. km/h

Name: Part AYou are driving home from school steadily at 94km/h for 180 km.
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Description: Part AYou are driving home from school steadily at 94km/h for 180 km. It then begins to rain and youslow to 65 km/h instantly. You arrive home afterdriving 4.0 hours.How far is your hometown from school?Express your answer using two significant figu

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter1: Getting Started

Section: Chapter Questions

Problem 13PQ: A garden snail named Archie, owned by Carl Branhorn of Pott Row, England, covered a 33-cm course in...

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(a) A car speedometer has a 5% uncertainty. What is the range of possible speeds when it reads 90 km/h? (b) Convert this range to miles per how. Note 1 km = 0.6214 mi.
A garden snail named Archie, owned by Carl Branhorn of Pott Row, England, covered a 33-cm course in 2.0 min at the 1995 World Snail Racing Championships, held in Longhan, England (Fig. P1.13). Determine Archies average speed Sav = d/t in the appropriate SI units.
Acceleration a has the dimensions of length per time squared, speed v has the dimensions of length per time, and radius r has the dimension of length. Which of the following expressions may be correct? Explain your answer in each case. a. a = vr b. a = v/r c. a = v2/r d. a = v/r2
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(a) Find a conversion factor to convert from miles per hour to kilometers per hour. (b) For a while, federal law mandated that the maximum highway speed would be 55 mi/h. Use the conversion factor from part (a) to find the speed in kilometers per hour. (c) The maximum highway speed has been raised to 65 mi/h in some places. In kilometers per hour, how much of an increase is this over the 55-mi/h limit?
(a) A car speedometer has a 5.0% uncertainty. What is the range of possible speeds when it reads 90 km/h? (b) Convert this range to miles per hour. (1Km=0.6214)
Let's say you ride your bike from your house to your friend's house. To get there uou have to go 4.00 miles south, 8.00 miles west, then 6.00 miles north. This trip takes 32.5 minutes.a. What is your average speed for the trip in miles per minute? b. What is your average velocity for the trip in miles per minute?
a. You leave your home & drive 45 km in the +y direction for a job interview. They offer you the job so you decide to stop and celebrate with friends on the way home. You leave the interview and drive 22 km in the -y direction. Let your home be your reference point. - What total distance did you drive?(km) - What total distance did you drive? ____km to the a. +y, b. -y, c. +x, d. -x, c. no direction b. You are standing on a circular track that is 400 m long. You begin jogging at the start line and keep jogging until you complete 2 full lap and stop at the same point you started at. - What is the total distance you travel? (m) -What is your final displacement? (m)
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A driver needs to make a delivery to an office that is 30 km away. The driver has traveled for 45 minutes west down a straight road at 50 km/h. a. Has the driver traveled far enough to reach the office? Support your response. b. Assume the driver has gone far enough and is traveling on the correct road. If he has not yet seen the business, what should he do to make the delivery? Explain your reasoning. Plzzz help
A frustrated office worker throws his laptop out of his business's high- rise office building. The height, h, in meters of the laptop above the ground at t seconds can be modelled by h(t) = 125-5t². a. Determine the average rate of change between the third and fourth second of the laptop's flight. b. Estimate the rate at which the laptop hits the ground.