KinematicsHard
Question
Which of the following statement are true for a moving body ?
Options
A.If its speed changes, its speeds must change and it must have some acceleration
B.If its velocity changes, its speeds must and it must have some acceleration
C.If it velocity changes its speed may or may not change, and it must have some acceleration
D.If its speed changes but direction of motion does not change, its velocity may remain constant
Solution
= |
| 
; [|
| → speed]Velocity may change by changing either speed or direction and by both.
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