1) While accelerating at a constant rate from 12.0 m/s to 18.0 m/s, a car moves over a distance of 60.0 m. How much time does it take? 1.00 s 2.50 s 4.00 s 4.50 s none of the above A) A sports car accelerates at a constant rate from rest to a speed of 90 km/hr in 8 s. What is its acceleration? 3.13 m/s2 4.22 m/s2 5.31 m/s2 6.67 m/s2 none of the above B) What distance does a train travel while slowing from 28 m/s to zero in 12 s? 168 m 178 m 236 m 291 m none of the above C) If the instantaneous velocity of an object is zero, then its acceleration must be: zero positive negative 100 m/s2 not enough information
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.
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1)
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1.00 s
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2.50 s
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4.00 s
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4.50 s
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none of the above
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3.13 m/s2
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4.22 m/s2
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5.31 m/s2
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6.67 m/s2
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none of the above
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168 m
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178 m
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236 m
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291 m
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none of the above
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C)
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zero
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positive
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negative
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100 m/s2
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not enough information
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