A ) The net force is less than the weight of the rock, but greaterthan zero newt
ID: 1726315 • Letter: A
Question
A )
The net force is less than the weight of the rock, but greaterthan zero newtons.
B )
The net force is equal to the weight of the rock.
C )
The net force is greater than the weight of the rock.
D )
The direction of the net force changes from up to down.
E )
The net force is instantaneously equal to zero newtons.
A )
The net force is less than the weight of the rock, but greaterthan zero newtons.
B )
The net force is equal to the weight of the rock.
C )
The net force is greater than the weight of the rock.
D )
The direction of the net force changes from up to down.
E )
The net force is instantaneously equal to zero newtons.
Explanation / Answer
* The only force acting on the rockat the highest point is gravitational pull of earth which is equal to theweight of the rock. * Hence, the net force is equal tothe gravitational force acting on the rock. Fnet = W = mg * The direction of gravitationalforce is always towards the center of earth i.e., downward and it never change itsdirection. * The acceleration of the body isequal to the acceleration due to gravity ( g ) through out themotion and it'sdirection is always downward i.e.,towards the center of earth. Correct option: (B ) The net force is equal to the weight of therock
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