1.

A body of mass 10kg is raised to a height of 4meters above the ground in 2second

Answer»

ong>Answer:

Work = Force * DISTANCE

(I’m using an asterisk to denote multiplication)

Force (in NEWTONS) EXERTED by a MASS m is: F = m * g

(assuming we are on Earth, that is)

where g is the acceleration due to GRAVITY, 9.81 m/s/s

Therefore Work = Mass * g * Distance

= 10 * 9.81 * 5

=490.5 Joules



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