Which quantity has both a magnitude and a
2 answers:
Answer:
Impulse is a vector quantity.
Explanation:
The force acting for a very short interval of time is called impulse. It is also equal to the change in momentum of an object for a very short time. It is represented with letter J. Its SI unit is Newton-seconds or N-s.
Impulse is a vector quantity i.e. impulse has both magnitude as well as direction. Its direction is as same as the direction of applied force. Mathematically, it can be written as :
Hence, the correct option is (2) "impulse ".
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Answer:
Potential energy, E = 25 mgh
Explanation:
Given that,
Mass of the object, m = 5 m
It is lifted to a height of, h = 5 h
It is required to find the potential energy gained by the object. It is given by the product of object's mass, acceleration due to gravity and heigh above ground. It is given by :
E = 25 mgh
So, the potential energy gained by the object is (25 mgh). Hence, this is the required solution.