A car travelling in a circle of constant radius has a variable period T and variable speed v. How does this centripetal acceleration vary with T and v?   a. It is inversely proportional to T2 and directly proportional to v2 b. It is inversely proportional to T and directly proportional to v c. It is directly proportional to T2 and inversely proportional to v2 d. It is directly proportional to T and inversely proportional to v

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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A car travelling in a circle of constant radius has a variable period T and variable speed v. How does this centripetal acceleration vary with T and v?

 
a. It is inversely proportional to T2 and directly proportional to v2
b. It is inversely proportional to T and directly proportional to v
c. It is directly proportional to T2 and inversely proportional to v2
d. It is directly proportional to T and inversely proportional to v
 

A 35 kg child sits 1.3 m from the center of a teeter-totter. How far from the center, on the other side of the fulcrum, must a 25 kg child sit in order to keep the teeter-totter horizontal?

 
a. 1.8 m
b. 2.3 m
c. 1.5 m
d. 0.93 m
 

Determine the net force if these forces were acting on an object.

14 N, left
16 N, up
16 N, down

a. 4N [up]
b. 8N [down]
c. 14N [left]
d. 16N [up]
e. 8N [right]
f. 16N [right]
g. 6N [down]
 
 

Sue walks 4 blocks north, 3 blocks west and then 2 blocks north. How many blocks is she from where she started?

 
a. 5 blocks
b. 6.7 blocks
c. 9 blocks
d. 4 blocks
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