A sled accelerates down a hill and then slows down after it reaches a flat portion of ground. The speed of the sled s(t) in ft/sec) at a time t (in sec) after movement begins can be approximated by: 2t for 0

A sled accelerates down a hill and then slows down after it reaches a flat portion of ground. The speed of the sled s(t) in ft/sec) at a time t (in sec) after movement begins can be approximated by: 2t for 0

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 115CP: In 1967, New Zealander Burt Munro set the world record for an Indian motorcycle, on the Bonneville...

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Question

A sled accelerates down a hill and then slows down after it reaches a flat portion of ground. The speed of the sled s(t) in ft/sec) at a time t (in sec) after movement begins can be approximated by:

2t for 0<t<30

s(t)= 60 for 30<t<90

t-29

Determine the speed of the sled after 10 sec, 30 sec, 60 sec, and 90 sec. Round to 1decimal place if necessary.

The speed of the sled is blank /ftsec after 10 sec.

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