kinematics can be defined as a sub-discipline in physics aimed at understanding the motion of objects without considering the forces that move them.
- Classical mechanics refers to a physical theory that describes the motion of objects.
- Kinematics can be considered a branch of classical mechanics that studies the motion of objects but without considering the forces that move them.
- Kinematics describes the motion of objects and systems by using different types of information such as diagrams, numbers, equations and/or graphs.
In conclusion, kinematics is a sub-discipline in physics aimed at understanding the motion of objects without considering the forces that move them.
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Just to make it easier on you It’s C.Pressure
Answer:
Average speed = 46.67 m/s
Explanation:
Given that the time taken in covering first 1000 m = 25 seconds.
The time taken in covering next 2.5 km = 50 seconds.
Total distance covered = 1000 m + 2500 m = 3500 m
Total time taken = 25+50=75 seconds
Average speed = Total distance covered / total time taken
= 3500/75 = 46.67 m/s
Answer: vf = 51 m/s
d = 112 m
Explanation: Solution attached:
To find vf we use acceleration equation:
a = vf - vi / t
Derive to find vf
vf = at + vi
Substitute the values
vf = 3.5 m/s² ( 8.0 s) + 23 m/s
= 51 m/s
To solve for distance we use
d = (∆v)² / 2a
= (51 m/s - 23 m/s )² / 2 ( 3.5 m/s²)
= (28 m/s)² / 7 m/s²
= 784 m/s / 7 m/s²
= 112 m