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sbailey0962
04.08.2019 •
Physics
Which of shakina's statements regarding acceleration and velocity is false? "when the acceleration and velocity are in opposite directions, the particle slows down." "when the acceleration and velocity are in the same direction, the particle speeds up." "when the acceleration is negative, the velocity can be either negative or positive." "when the acceleration is negative, the velocity must also be negative."
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Ответ:
Ответ:
"When the acceleration is negative, the velocity must also be negative."
Explanation:
"When the acceleration and velocity are in opposite directions, the particle slows down."
TRUE
acceleration when opposite to velocity then the acceleration will become deceleration which will reduce the speed
"When the acceleration and velocity are in the same direction, the particle speeds up."
TRUE
When both are in same direction then it will help to increase the speed of the object.
"When the acceleration is negative, the velocity can be either negative or positive."
TRUE
Acceleration does not decide the direction of motion but it is rate of change in velocity
"When the acceleration is negative, the velocity must also be negative."
FALSE
Acceleration does not decide the direction of motion but it is rate of change in velocity
Ответ: