Problems related to kinematics.

1. CHECKPOINT
A horse is traveling at a velocity of 2.7
m/s. 3.5 seconds later it is traveling at
a velocity of 4.8 m/s. What is the
acceleration?
Answer: 0.6 meter per second square
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2. CHECKPOINT
Which of the following sets of
measurements can be used to calculate
acceleration?
Answer: change in time, initial velocity,
and final velocity
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3. CHECKPOINT
An ambulance is currently traveling at 15 m/s, and
is accelerating with a constant acceleration of 5
meters per second square. The ambulance is
attempting to pass a car which is moving at a
constant velocity of 30 meters per second. How far
must the ambulance travel until it matches the
car's velocity?
Answer: 67.5 meters
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4. CHECKPOINT
A Cebu Pacific aircraft has a landing speed of
72 m/s, and upon landing it is able to come to
a stop in 2,000 meters. Assuming constant
deceleration, how long would it take for the
Cebu Pacific to come to a full stop?
Answer: 56 seconds
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5. CHECKPOINT
A Ferrari Enzo is able to reach a speed of 134
miles per hour (60 meters per second) from 0
mph in 11 seconds. Assuming constant
acceleration, how far would the Enzo travel in
this amount of time?
Answer: 330 meters
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6. CHECKPOINT
Which of the following is a true statement concerning speed,
velocity, and acceleration?
• An increase in speed must mean the object experiences
acceleration
• An object cannot accelerate if it is moving at a constant speed
• Speed is a vector quantity representing magnitude and direction
• If the displacement of an object is zero, the speed must be zero
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7. CHECKPOINT
To reach the orbital altitude of Earth, a space
shuttle must accelerate from zero to 8,000
meters per second (approx. 18,000 miles per
hour) in eight and a half minutes. What would
the minimum average acceleration of the
shuttle have to be in order to achieve this?
Answer: 15 meters per second square
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8. CHECKPOINT
Aroldis Chapman holds the world record for fastest
baseball pitch at 105.1 mph (169 km/h). The
distance from the pitcher's mound to home plate is
approximately 60 feet (approx. 18 meters).
Assuming the constant velocity, how much time
would a better have to react to Chapman's world
record pitch?
Answer: 0.4 second
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9. CHECKPOINT
An airplane lands with an initial velocity of
70.0 m/s and then decelerates at 1.50
m/s/s for 40.0 s. What is its final velocity?
Answer: 10 m/s
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10. CHECKPOINT
Dragsters can achieve an average
acceleration of 26.0 m/s/s. Suppose a
dragster accelerates from rest at this rate
for 5.56 seconds. How far does it travel in
this time?
Answer: 402 m
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11. CHECKPOINT
Dragsters can achieve an average
acceleration of 26.0 m/s/s. Suppose a
dragster accelerates from rest at this rate for
5.56 seconds. Calculate the final velocity of
the dragster without using information about
time.
Answer: 145 m/s
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12. CHECKPOINT
A car starts and accelerates at a constant
4 m/s/s in 1 s. Determine the speed and
distance after 10 seconds.
Answer: speed = 40 m/s; distance =
200 m
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13. CHECKPOINT
A car travels at 40 m/s, decelerates at a
constant 4 m/s/s until rest. Determine final
velocity and distance after decelerating in 10
seconds.
Answer:
final velocity = 0 m/s; distance = 200 m
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14. CHECKPOINT
A car moves at 90 km/h past a police that
stops by the side of the road. One minute
later, the police car chases at 0.8 m/s/s. How
far the police car reaches the car?
Answer:
4 kilometers
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15. CHECKPOINT
A car moves a constant 24 m/s brakes so that
it has a constant deceleration of 0.952 m/s/s.
Determine the speed of the car after a
distance of 250 meters.
Answer:
10 m/s
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