Estimate the distance in feet that your car travels on the en- trance ramp to a freeway as it accelerates from 30 mph to the freeway speed of 70 mph. During this motion what is the average acceleration of the car? An antelope moving with constant acceleration covers the dis- tance between two points 70.0 m apart in 6.00 s. Its speed as it passes the second point is 15.0 m>s. What are (a) its speed at the first point and (b) its acceleration? A Tennis Serve. In the fastest measured tennis serve, the ball left the racquet at 73.14 m>s. A served tennis ball is typically in con-tact with the racquet for 30.0 ms and starts from rest. Assume constant acceleration. (a)What was the ball’s acceleration during this serve? (b) How far did the ball travel during the serve?
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.
Estimate the distance in feet that your car travels on the en-
trance ramp to a freeway as it accelerates from 30 mph to the freeway speed of 70 mph. During this motion what is the average acceleration
of the car?
An antelope moving with constant acceleration covers the dis-
tance between two points 70.0 m apart in 6.00 s. Its speed as it passes the second point is 15.0 m>s. What are (a) its speed at the first point and
(b) its acceleration?
A Tennis Serve. In the fastest measured tennis serve, the ball left the racquet at 73.14 m>s. A served tennis ball is typically in con-tact with the racquet for 30.0 ms and starts from rest. Assume constant acceleration. (a)What was the ball’s acceleration during this serve?
(b) How far did the ball travel during the serve?
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