1 pound ≈ 0.4536 kg
170 pounds ≈ 170 * 0.4536 kg
≈ 77.112 kg
Answer:
F=124.03 N
Explanation:
Given data
mass m=5.00 kg
y(t)=(2.80 m/s)t+(0.61m/s³)t³
To find
Force F at t=4.10 s
Solution
As
derivative with respect to time we get
again derivative with respect to time to get acceleration
at t=4.10 s then a(t) is
a=3.66(4.10)
a=15.006 m/s²
Now to use Newton law to find force in y direction
The law you need is :
lets call the constant c = 4pi*epsilon naught*r2.
where r is radius ( or seperation of the charges). epsilon naught is a constant of about 8.85*10^-12 or something like that. and 4 pi is just 4 times pi.
the actual equation is
FORCE= (q1*q2)/c
10 – 3 + 8 = 15 meters
10 + 3 + 8 = 21 meters
Her total traveled is 21 meters, displacement is 15 meters.