Download Physics Mad Libs –Kinemadlibs by David O`Dell vf2 = vi2 + 2ad vf

Physics Mad Libs –Kinemadlibs by David O’Dell
vf2 = vi2 + 2ad
vf = vi + at
df = di + vit + ½ at2
1) A [large vehicle] carrying several tons of [objects made of plastic] encounters a [type of group of people] in the middle of the road
and slows from 22 m/s to 3.0 m/s at a constant deceleration of -2.1 m/s2.
a. How much time was required to decelerate the vehicle?
Variables:
Which equation?
a = -2.1 m/s2
vf = vi + at
vi =
Rearrange the equation to solve for the unknown variable:
vf =
t = (vf –vi) / a
d = not given and not being asked for
Solution:
t=?
2) A [type of person] driving on a [adjective] road suddenly sees a [animal] “[type of movement]” in her headlights. She is driving at
11.4 m/s, immediately applies the brakes and slows with an deceleration of -3.80 m/s2.
a. How much time is needed for the car to come to a complete stop?
Variables:
Which equation?
a=
vi =
Rearrange the equation to solve for the unknown variable:
vf =
d=
Solution:
t=
b. If the animal is 15 meters away when the person applies the brakes, does the person hit the animal?
Variables:
Which equation?
a=
vi =
Rearrange the equation to solve for the unknown variable:
vf =
d=
t = found from the solution of the previous question
Solution:
3) An [type of Olympic sportsperson] starts from rest and accelerates at a constant 3.00 m/s2 for 30.0 s and then [type of physical
movement] a [adjective] giant [metal object].
a. How far did the person go after 30 seconds?
Variables:
Which equation?
a=
vi =
Rearrange the equation to solve for the unknown variable:
vf =
d=
Solution:
t=
b. How fast was the person going at 30 seconds?
Variables:
Which equation?
a=
vi =
Rearrange the equation to solve for the unknown variable:
vf =
d=
Solution:
t=
4) A rocket propelled [object] is traveling at 16.0 m/s when it is passed by a [favorite color] [flying object]. It immediately hits
the jets and accelerates at 14.0 m/s2 for 3.25 s.
a. What is the final velocity the rocket propelled object reaches?
b. How far does it travel in this amount of time?
5) A BMW and an F1 car both cross the finish line traveling at 20 m/s. The BMW comes to a stop in 4.05 s and the
F1 in 2.12 s.
a. How much further did the BMW travel while stopping than the F1 car? This is a two step problem; you
must find acceleration of each car first in order to find the stopping distance.