ThIs is the same type of problem
find out the time value
3 = 1/2*a*T^2
6/10 = t^2
t = 0.77 seconds
and the distance is given 5 m
thus speed ,= distance/time
speed = 5/0.77
= 6.45 m/s
The wavelength of an electromagnetic wave is given by
where
is the speed of light and
is the frequency. Substituting the numbers, we find
So, the wave in the problem has a wavelength of 272 km.
Within the elastic limit of a solid material, the deformation (strain) produced by a force (stress) of any kind is proportional to the force. If the elastic limit is not exceeded, the material returns to it original shape and size after the force is removed, other it remains deformed or stretched.
I'm not that smart but I think it is c I really hope It helps