a car is traveling in a race. the car went from the inital velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds. what is the acceleration?

Given: a car takes

10

s to reach

27

m

s

from rest.

acceleration

=

a

=

v

f

−

v

i

t

,

where

v

f

=

velocity final and

v

i

=

velocity initial

a

=

27

−

0

10

=

2.7

m

s

2

Answer link

Nam D.

May 21, 2018

2.7

m/s

2

Explanation:

Acceleration is given through the equation,

a

=

v

−

u

t

where:

v

is the final velocity of the object

u

is the initial velocity of the object

t

is the time taken

Here, since the car was at rest, it was stationary, and so

u

=

0

.

∴

a

=

v

t

=

27

m/s

10

s

=

2.7

m/s

2

Answer link

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