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The position of a pinewood derby car was observed at various times; the results are summarized in the following table. Find the average velocity of the car for (a) the first second, (b) the last 3 s, and (c) the entire period of observation.

t (s) 0 1 2 3 4 5
x (m) 0 2.3 9.2 20.7 36.8 57.5




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James Samas
James SamasLv8
30 Oct 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

The position of a pinewood derby car was observed at various times; the results are summarized in the following table. Find the average velocity of the car for:

a. the first second,

b. the last 3 seconds,

c. the entire period of observation.

             

The position of a SHO as a function of time is givenby x =3.6 cos(5 π t + π / 6)where tis in secondsand x in meters.


(a) Find the period.
____ s
Find the frequency.
____ Hz

(b) Find the position at t = 0.
____ m
Find the velocity at t = 0.
____ m/s

(c) Find the velocityat t = 3 s.
____ m/s
Find the accelerationat t = 3 s.
____ m/s^2

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4. A particle with mass 10kg starts from rest at r = 10 and ?=0radians, following the trajectory given by r=10-2t , ?=0.2t. Findthe radial and angular components and of the force, as functions oftime, that will cause this motion

5. A sheet of material, mass 2kg, uniform density, is in the shapeof a right triangle bounded by the lines y=0, x=0, and y=4-x. Itattched to the origin, and free to rotate about the y axis. A forceof 1000 Newtons is applied perpendicular to the plane, located atthe x=4 point on the triangle as it starts to rotate. In aright-handed coordinate system, how fast will the object bespinning (in radians per second) as it crosses the y-z plane (thatis, when it has rotated through 270 degrees)?

Thank you in advanced.

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