When a person tries to stop a moving car by applying a backward force , then the work done by the person will be what- positive, negative, zero or both position and negative.
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7
Answer:
it will negative because the velocity of car will very very very very slowly decrease and then the displacement will be in the opposite direction of initial displacement
Answered by
7
Answer:
POSITIVE WORK :the work done on an object is said to be positive work when force and displacement are in same direction.
example: When an object moves on horizontal surface,force and displacement acts in forward direction. So,work done is positive.
NEGATIVE WORK:The work done is said to be negative work when force and displacement are in opposite direction.
example: When an object is thrown upwards,the force CTS in downward direction whereas displacement acts in upward direction.
ZERO WORK:The work done is said to be zero work when force and displacement are perpendicular to each other or when either force or displacement is zero.
example: When we hold an object and walk,the force acts in downward direction whereas displacement acts in forward direction.......
please mark as brainliest....
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