A car rolls along a surface with a coefficient of friction of .795 I f the car has a mass of 905 kg, what force is needed to acc
1 answer:
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The resistance of an ohmic material is given by
where l is the length and a is the cross sectional area. For a circular wire, this area is that of a circle:
Then solving for diameter, d:
where l is the length and a is the cross sectional area. For a circular wire, this area is that of a circle:
Then solving for diameter, d:
Answer:
Explanation:
Generally from kinematics equations we have that
Here u is the initial velocity of the rock and the value is 0 m/s given that there was no information that it was in motion before the fall
substituting 1.43 s for t and for g we have that
=>
The negative sign show that the displacement is in the direction of the negative y-axis