A driver in a moving car applies the brakes. The car slows to a final speed of 3.20 m/s over a distance of 40.0 m and a time interval of 9.25 s. The acceleration while braking is approximately constant. (a) What is the car's original speed before braking? m/s (b) What is its acceleration during this time? (The car's initial velocity is in the positive direction. Indicate the direction with the sign of your answer.) m/s²
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
![A driver in a moving car applies the brakes. The car slows to a final speed of 3.20 m/s over a distance of 40.0 m and a time interval of 9.25 s. The acceleration while braking is approximately constant.
(a) What is the car's original speed before braking?
m/s
(b) What is its acceleration during this time? (The car's initial velocity is in the positive direction. Indicate the direction with the sign of your answer.)
m/s²](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faf6c3174-f071-4892-a981-9c51afb6153d%2F3ea169ac-98a1-4932-a43f-57e1018006fc%2Fktb0owp_processed.png&w=3840&q=75)
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