Answer:
As a result, if the field lines are close together (that is, the field line density is greater), this indicates that the magnitude of the field is large at that point. If the field lines are far apart at the cross-section, this indicates the magnitude of the field is small. (Figure) shows the idea.
Explanation:
Let the initial velocity be u = 23 m/s
Let the final velocity be v.
Vehicle stops finally, therefore v = 0 m/s
Here during the braking, vehicle decelerates with constant acceleration, thus the change in velocity is linear from initial velocity to final velocity.
for the Given condition:
Write the expression for the average speed
Substitute the values in the above expression.
Hence, the average speed during braking is 11.5 m/s
K.E.=mv^2/2=>
m=0.15
v=35m/s
0.15•35^2/2
183.75/2=91.87