1) A child starts sledding from rest, going down a 40 m long 7.5° incline, then coasting across a horizontal stretch. The mass of the sled + child is 35 kg, and the coefficient of kinetic friction is 0.060. d) Determine the speed of the sled + child at the bottom of the incline. e) How far along the horizontal stretch does the sled + child travel before stopping? f) What is the total time for the ride? g) Determine how much energy that is transferred to thermal energy. h) Determine how much work is done on the sled + child by the gravitational force while the child + sled is moving along the incline. i) By considering the energy of the system and energy transformations, determine the speed of the sled + child at the bottom of the incline. Does your answer agree with part d?
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.
I took out part a - c because they are answered already.
1) A child starts sledding from rest, going down a 40 m long 7.5° incline, then coasting across a horizontal stretch. The mass of the sled + child is 35 kg, and the coefficient of kinetic friction is 0.060.
d) Determine the speed of the sled + child at the bottom of the incline.
e) How far along the horizontal stretch does the sled + child travel before stopping?
f) What is the total time for the ride?
g) Determine how much energy that is transferred to thermal energy.
h) Determine how much work is done on the sled + child by the gravitational force while the child + sled is moving along the incline.
i) By considering the energy of the system and energy transformations, determine the speed of the sled + child at the bottom of the incline. Does your answer agree with part d?
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