Answer:
+7.0 m/s
Explanation:
Let's take rightward as positive direction.
So in this problem we have:
a = -2.5 m/s^2 acceleration due to the wind (negative because it is leftward)
t = 4 s time interval
v = -3.0 m/s is the final velocity (negative because it is leftward)
We can use the following equation:
v = u + at
Where u is the initial velocity
We want to find u, so if we rearrange the equation we find:
and the positive sign means the initial direction was rightward.
Bruces mass is 63kg
Answer:
<em>F=8.87 N</em>
Explanation:
<u>Coulomb's Law </u>
The electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.
Written as a formula:
Where:
q1, q2 = the objects' charge in coulomb
d= The distance between the objects in meters
Object 1 has a charge of
Object 2 has a charge of
They are separated by a distance of
d = 0.099 m
Calculate the force:
F=8.87 N