No. 2 2. A BMW convertible travels on the German autobahn at a speed of 128 km/h. What is thespeed of the car (a) in meters per second? (b) in miles per hour?3. The radius of Earth is 6.4 x 10 3 km. Find the surface area of Earth in square meters andin square miles.4. When a body of mass m is moving with a speed v, it has kinetic energy associated with itsmotion. Energy is measured in kg m2 s-2, If the speed of a moving body is increasedby 25% while its mass remains constant, by what percentage does the kinetic energyincrease?

Given data: Speed (v) = 128 km/h Required: Speed of the car in m/s and in mi/h

Answered: A BMW convertible travels on the German…

A BMW convertible travels on the German autobahn at a speed of 128 km/h. What is the speed of the car (a) in meters per second? (b) in miles per hour?

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter13: Universal Gravitation

Section: Chapter Questions

Problem 13.39P

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Concept explainers

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

No. 2

2. A BMW convertible travels on the German autobahn at a speed of 128 km/h. What is the
speed of the car (a) in meters per second? (b) in miles per hour?
3. The radius of Earth is 6.4 x 10 3 km. Find the surface area of Earth in square meters and
in square miles.
4. When a body of mass m is moving with a speed v, it has kinetic energy associated with its
motion. Energy is measured in kg m2 s-2, If the speed of a moving body is increased
by 25% while its mass remains constant, by what percentage does the kinetic energy
increase?

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