2 wheels force is put on the back gear to push a larger gear on front . when pedalling on flat force should be applied on middle to smaller size. However when bike reached a terminal force it rider will move to smaller gear and go faster. If bike is going down hill the force of gravity will mean rider can manage the smallest gear as in fastest speed as Force = Mass × Velocity and the impact of gravity means less force is required as the weight of the bike and rider However the opposite it through for uphill as the rider is going against gravity ..weight and gravity will mean the rider will need to go to the larger gear the slower speed.
There are other factors as in wind and slip stream and type of pedals to maximise the force.
When magnetic field lines and surface area are perpendicular to each other.
Answer:
Speed at the bottom of the roller coaster = 49.79 m/s
Explanation:
A new ride being built at an amusement park includes a vertical drop of 126.5 meters. Starting from rest, the ride vertically drops that distance before the track curves forward.
We have to find the speed at the bottom.
Here the gravitational energy fully converts to kinetic energy, so we equate it.
Gravitational energy = 
Kinetic energy = 
=
= 2479.4
Velocity, v = 49.79 m/s
Answer:
the experiment that Asch was studying was how individuals yielded to or defied a majority of groups and the effect of such influences on beliefs and options
Answer:
22050 J
Explanation:
Given Mass of the ball, m = 4.5 Kg
Height, h =500 m
Acceleration due to gravity, 
To calculate the potential energy we use formula,
Substituting the given values, we get
PE = 4.5× 9.8×500
=22050 J
