##### A powerful motorcycle can accelerate from rest to 24.8 m/s (55 mi/h) in only 5.9

 Physics Tutor: None Selected Time limit: 1 Day

A powerful motorcycle can accelerate from rest to 24.8 m/s (55 mi/h) in only 5.90 s.
(a) What is its (constant) acceleration?
m/s2
(b) How far does it travel in that time?
m
Sep 8th, 2015

a)accleration = Vf-Vi/t

Vi=0

Vf=24.8 m/s

t=5s

a=24.8/5 =4.96 m/s^2

b) d=1/2at^2

=1/2 *4.96 *5*5

=62 m.

Sep 8th, 2015

Sep 8th, 2015

which one a or b

Sep 8th, 2015

sorry, u are question too fast to answer let me check.

Sep 8th, 2015

a)accleration = Vf-Vi/t

Vi=0

Vf=24.8 m/s

t=5.90s

a=24.8/5.90=4.20 m/s^2

b) d=1/2at^2

=1/2 *4.20 *5*5

= 52.5 m

Sep 8th, 2015

now check

Sep 8th, 2015

The was still wrong

Sep 8th, 2015

which one is wrong a or b

Sep 8th, 2015

b) d=1/2at^2

=1/2 *4.20 *5.9*5.9

=73.10 m

this should be right....................................................................................................

Sep 8th, 2015

is it right????

Sep 8th, 2015

Sep 8th, 2015

thanks.

Sep 8th, 2015

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Sep 8th, 2015
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Sep 8th, 2015
May 27th, 2017
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