2D Kinematics: A rocket is fired vertically upward with an initial velocity of 80 m/s. It accelerates upward at 4 m/s2 until it reaches an altitude of 1000 m when its engines fail and it enters free fall. (a) How long is the rocket in motion? (b) What is its maximum altitude and what is its velocity just before it crashes back into the earth?
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.
2D
upward at 4 m/s2 until it reaches an altitude of 1000 m when its engines fail and it enters free fall.
(a) How long is the rocket in motion? (b) What is its maximum altitude and what is its velocity
just before it crashes back into the earth?
Newton's Law: A block remains stationary on an inclined plane of 30 degrees
(a) Draw a free body diagram.
(b) Find the minimum coefficient of static friction between the block and incline.
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