Question

The speed of a body is 10km/hr if it's mass is double then speed becomes?
A. 10 km/h
B. 5km/h
c. none​

Answer 1

Answer:

5km/h

Explanation:

See:Because the speed will be half by the first one

10 half is=5

Answer 2

we have to find the speed of a body if mass of body is doubled when the initial speed of body is 10 km/hr.

solution : speed of the body doesn't depend on the mass of that body. it is the rate of change of distance covered by body to time taken.

so if the mass of body is doubled then speed remains same. that is 10 km/hr.

[note : but linear momentum will change if you change the mass of body. becuase linear momentum is the product of mass and velocity. ]

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