The speed of light is approximately 3.00 x 10^8 m/s. Then the next step is to convert m/s into km/s.To determine the time, the distance must be divided with velocity. It will take the light signal 3.3*10^-6 seconds to reach his assistant.
T=5s
S=5m
U=0s/m
Acceleration=m/s^2
S=ut+(1/2)(a)(5^2)
A=(25/2)=5
A=5/(25/2)
A=10/25
A=2/5
A=0.4
A=0.4m/s^2.
Answer:
.000828 j
Explanation:
Work = F * d
.0069 N * .12 m = .000828 j
Radial acceleration is given by

where

then

Now

Using the relation


Putting into rpm
<span> answer as followed 240km/4h=60km/h </span>