This would be an example on what to do, just replace the fraction numbers with your own! Good luck!
If this speed is based on what would be safe in wet weather, estimate the radius of curvature for a curve marked 50 km/h . The c
1 answer:
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Answer:
Explanation:
In this case the kinetic energy of the bike is converted into the heat energy between the area of contact of tyre and the road. This happens due to the work done by the frictional force between the surface to stop the relative motion between the road and the tyre.
Given:
- normal force on the rear tyre,
(as given in the question that the rear tyre supports half the combined weight of the bike and the rider.)
- distance dragged while stopping the tyre,
- coefficient of kinetic friction between the surfaces,
<u>Now, frictional force between the surfaces:</u>
<u>Now, the work done by the kinetic friction:</u>
According to the energy conservation this amount of energy is converted into thermal energy between the surfaces in contact, i.e. road and the tyre.
Answer:3.67 s
Explanation:
Given
Ball is thrown with an initial velocity of
As the ball moves upward it experience a declaration due to gravity which will slow down the ball
using
where v=final velocity
u=initial velocity
a=acceleration
t=time
Here