What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s2?
2 answers:
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Answer:
a) 360 kQ
b) 4.32 MJ
c) 1200 W-h
Explanation:
a) The definition of the current is.
having a count that 10 hours = 36.000 s
b) The definition of the Energy in power terms is.
and the definition of power is:
replacing in the energy formula.
solving the integral, have into account that t is in seconds.
c) The energy in W-h, we can find it multiplying power by hours
.
Answer:
W = 5586[J]
Explanation:
Work in physics is defined as the product of force by a distance.
where:
W = work [J]
F = force = m*g [N]
m = mass = 300 [kg]
g = gravity acceleration = 9.81 [m/s²]
d = distance = 1.9 [m]
Now replacing: