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Physics Plus (Section 4)
Kinematics Problem Solving
These problems are straightforward kinematics problems. Use the problem solving
process to describe the situations and solve, showing all work. Use g = 10 m/s
2
.
1.
Peter Rosendahl rode his unicycle a di
stance of 100 m in 12.11 s.
If Rosendahl started at rest, what was the magnitude of his
acceleration?
2.
Sam goes sledding down a 20 m long hill, starting at rest. If he
accelerates at a rate of 3 m/s
2
, how long will it take to get to
the bottom? (3.7 s)
3.
Brad is running down the basketball court starting at 10 m/s. If
the basket is 5 m away, and it takes him 5 s to get there, what
is his acceleration? (

3.6 m/s
2
)
4.
The velocity of a car decreases as it travels down a hill that
points down and to the left.
Initially it travels at speed 9.0
m/s and 20 m further down the hill the car’s speed is 4.0 m/s.
Determine the acceleration of the car.(

1.6 m/s
2
)
5.
A car accelerates from 15 m/s to 30 m/s in 4.0 s. How far did
the car travel? (90 m)
6.
An automobile th
at set the world record for acceleration
increased speed from rest to 27 m/s in 3.07 s. How far had the
car traveled by the time the final speed was achieved?
7.
A car starts to move with increasing speed from rest. The car
accelerates at 2 m/s
2
until reachi
ng a maximum speed of 20 m/s.
How far does it travel? (100 m)
8.
The skid marks left by the decelerating jet

powered car
The
Spirit of America
were 9.60
km
long. If the car’s acceleration
was

2.00 m/s
2
, what was the car’s initial velocity?
9.
A kid goes dow
n a slide, accelerating at 1m/s
2
for 3s. If he
starts at rest, how long is the slide?(4.5m)
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10.
Starting from rest, a horse runs from the starting line to
the finish, 100 m away. If it takes 10 s to finish the race,
what is the acceleration of the horse? (2
m/s
2
)
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