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Where? Or what forces? Forces that need to be increased in, say, a car are trust and forward force. For your other question, I guess it depends.
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What would happen if a boy and girl increase the force to pedal by pedal faster each applies the same increase force what will happen?
There speed will increase steadily and if they are going in same direction, they will reach the destination at the same time.
What would happen if more force is added to already moving object?
If a rolling ball was rolling towards you, it is already under a force , otherwise it wouldn't be moving. If you then gave the ball a whack, propelling the ball in the same direction, you would increase the force and, thereby, increase the speed.
What mechanism would be used to increase speed?
A bevel gear is used to increase speed.
Explain the term balanced force and unbalanced force?
balanced forces are when the two opposite forces are equal and cause no change to the object e.g a car at a steady speed. unbalanced forces would cause the car to increase or decrease in speed
What types of change in motion causes acceleration?
Motion is the change of position over time. The rate of change of position is called or speed. Speed combined with its direction is called velocity. The rate of change of velocity is called acceleration. So, motion in which the speed or direction are changing is accelerated motion. The question uses the word cause, which may be confusing. Technically when a force is applied to a mass, there is acceleration. When there is acceleration the velocity changes. If the object was in motion to begin with, it would speed up or slow down or change direction. If the object was at rest, the force would have caused an increase in speed from zero, so it would start moving. Therefore if you think of a causal relationship, it would be more proper to say force causes acceleration, which IS a change in motion. For an example, an easy one is your bicycle. If you pedal, you are applying force. That force cause the bicycle's speed to increase ... acceleration ... and you are in motion. If you apply more force, you will go faster. If you apply the brakes, you will slow down which is also acceleration (because speed is changing). There is only one way to have motion without acceleration and that is to travel at a constant velocity ... constant speed in a straight line. In practice, there is no motion without acceleration for any period of time, because there is always some minute change in speed or direction.
How do you figure out the speed advantage or force advantage of a gear combination?
if its lower than 1 it would be speed, if higher than it would be force
How can you change an objects velocity?
Yes - speed is rate of change of position irrespective of direction. What an object cannot do is change direction without changing velocity, which is speed in a particular direction, i.e. a vector rather than a scalar. In vector terms, speed is the modulus of the velocity vector. An example would be a body in gravitational circular orbit around another body - constant speed, but continuously changing velocity due to the gravitational force.
Does an object on free fall increase in distance proportional?
an object free falling would continue to gain speed until met by a balanced force i.e. the ground
How would decreasing the time it took you to run a certain distance affect your speed?
It would increase your speed.
What would you apply in order to change an objects velocity?
force
What would be the effect on the gravitational force if you increase mass and increase the distance between the masses?
If you increase the mass, you increase the gravitational force proportionally. If you increase the distance between two masses, you decrease the gravitational force between them by and amount proportional to the square of the distance.
How could you measure frictional force?
For dynamic friction, measure the force required to maintain a constant speed. If you have to pull with 300 N to maintain a constant speed, then friction is pulling back with 300 N. (If the forces were not balanced, there would be an acceleration.) For static friction, see how much force you need to apply before the object starts moving.
