B. Frictional force is your answer :)
D) All laws of physics apply to frames of reference that are accelerating.
Ubiquitous in natural and engineered systems.
It's a a solid that lacks the long-range order that is characteristic of a crystal. Hope that helps. If I'm wrong just search it on google there's a lot of results. :)
Answer:
d)30,000 N
Explanation:
Solution:
mass(m)=1000kg
initial velocity (u)=0m/s
final velocity (v)=15m/s
So,
acceleration (a)=(v-u)/t
=(15-0)/10
=1.5m/s^2
Atlast,
Force(F)=m×a
=20000×1.5
=30,000 N
From the graph given, the y-axis represents the potential energy while the x axis is represents the displacement. To calculate the potential difference, I think the values from point two to point one should be only subtracted.
Potential difference = 200 - 100 = 100 V/m