During its launch phase, a rocket accelerates uniformly from rest to 160 m/s upwards in 4.0 s, then travels with a constant speed of 160 m/s for the next 5.0 s. a) What is the initial acceleration of the rocket? b) How far does the rocket travel in this 9.0 s period? c) What is the final speed of the rocket in km/h? d) What is the average speed of the rocket during the first 4.0 s? e) What is the average speed of the rocket during the 9.0 s motion?
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.
During its launch phase, a rocket accelerates uniformly from rest to 160 m/s upwards in 4.0 s, then travels with a constant speed of 160 m/s for the next 5.0 s. a) What is the initial acceleration of the rocket? b) How far does the rocket travel in this 9.0 s period? c) What is the final speed of the rocket in km/h? d) What is the average speed of the rocket during the first 4.0 s? e) What is the average speed of the rocket during the 9.0 s motion?
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