Electric current is the movement of electrons through a wire. Electric current is measured in amperes (amps) and refers to the number of charges that move through the wire per second.
Answer:
63.57 kg
Explanation:
weight = 140 lbs
Let the mass is m.
1 lbs = 4.45 N
The weight of an object is defined as the force with which our earth attracts the body towards its centre.
Weight is the product of mass of the body and the acceleration due to gravity of that planet.
W = m x g
On earth surface g = 9.8 m/s^2
Now convert lbs in newton
So, 140 lbs = 140 x 4.45 = 623 N
So, m x 9.8 = 623
m = 63.57 kg
Thus, the mass is 63.57 kg.
Answer:
Explanation:
This is an excellent question to get an answer for. It teaches you much about the nature of physics.
The answer is no.
The distance will be quite different. The time might be different in getting to the distance. But the acceleration will be the same in either case.
How do you know? Look at one of the formulas, say
d = vi * t + 1/2*a * t^2
What does vi do? vi will alter both t and d. if vi = 0 then both d and/or t will be found. But what will "a" do? Is there anything else acting in the up or down line of action? You should answer no.
If vi is not zero, t will be less and d will take less time to get where it is going.