NAME
DATE
CLASS
PHYSICS
Math Skills
Acceleration
A car is traveling down a straight road. The driver then applies the brake,
and the car decelerates with a constant acceleration until it stops. Refer to
the equations below to answer the questions.
6*=){r;+
uy)Lt
,f = ri+ a(Lt)
Lx= u{Lt) +)a(Lt)2 ,f = ,;' + 2aa,x
1.
What is the car's final speed
2.
You are given the distance the car travels and the length of time it takes
for the car to come to a complete stop after the driver applies the brakes.
z1?
Explain your answer.
What is the expression for the car's initial speed?
o
3.
You are given the car's initial speed and the length of time it takes for the
car to come to a full stop after the driver applies the brakes. What is the
expression for the magnitude of the car's acceleration?
4.
You are given the car's initial speed and the distance the car travels before
it comes to a complete stop after the driver applies the brakes. What is
the expression for the magnitude of the car's acceleration?
5.
You are given the magnitude of the car's acceleration and the length of
time it takes for the car to come to a full stop after the driver applies
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the brakes. What is the expression for the initial speed of the car, and
what is the expression for the distance it traveled before it came to a
complete stop?
Chapter 2
Z
Position and Velocity Vs. Time Graphs
Sketch position vs, time and velocity vs, time graphs
for
the fottowing scenarios.
tf
specific distances, velocities, ond times ore given, lobelthem on your grophs. Assume all
movement is in o straight line.
1)
Your mother walks five meters to the kitchen at a velocit y of Zm/s, pauses by
the refrigerator for three seconds, then walks back with a plate full of potato
salad at a velocity of 1 m/s.
2l
A car is driving down the road at 55 mph, and after getting a flat
tire moves at 35
mpn.
3)
A bullet is fired from a gun and travels 1000 meters in one second before hitting
a solid target.
6)
When you hit a golf ball, it travels through the air at 25 m/s. lt slows down once
it hits the ground 100 meters away until it comes to a stop 110 meters away.