A) physics student with too much free time drops a watermelon from a roof of a building. hears the sound of the watermelon going “splat” 2.5s later. How high is the building? The speed of sound is 340m/s. You may ignore air resistance. B) An athlete whose mass is 90.0 kg is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 490 N. He lifts the barbell a distance of 0.60 m in 1.6 s. Find the total force that his feet exert on the ground as he lifts the barbell C) An ideal spring of negligible mass is 12.00 cm long when nothing is attached to it. When you hang a 3.15-kg weight from it, you measure its length to be 13.40 cm. If you wanted to store 10.0 J of potential energy in this spring, what would be its total length? Assume that is continues to obey Hooke’s law
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) physics student with too much free time drops a watermelon from a roof of a building. hears the sound of the watermelon going “splat”
2.5s later. How high is the building? The speed of sound is 340m/s. You may ignore air resistance.
B) An athlete whose mass is 90.0 kg is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a
barbell that weighs 490 N. He lifts the barbell a distance of 0.60 m in 1.6 s. Find the total force that his feet exert on the ground as he lifts the barbell
C) An ideal spring of negligible mass is 12.00 cm long when nothing is attached to it. When you hang a 3.15-kg weight from it, you measure its
length to be 13.40 cm. If you wanted to store 10.0 J of potential energy in this spring, what would be its total length? Assume that is continues
to obey Hooke’s law
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