an object will continue to stay at rest or move with unifrom velocity unless a force acts upon it

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A force is.......

something that causes an objecst to move

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A contact force is......

you have to in contact with it

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A non-contact force is ......

a force you don't have to be in conatct with

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Incertia (in-er-sha) is....

is a measurement of how difficult it is to chnage the motion of an object.

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What is the equation for force......

mass (kg) x acceleration (m/s/s)

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What is terminal velocity.....

the max speed an object can reach

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What is the equation for momentum......

mass (kg) x velocity (m/s)

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How do you work out velocity......

distance/time (distance divided by time)

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how do you find the weight of anything.....

mass x gravity

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What is the conservation of momentum......

statate that the momentum of a system is constant if there are no external forces acting on it.

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What is the equation for work done.......

force (N) x distance (m)

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What is the equation for power.......

work done (J) / time (s)

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1KJ is equal to .....

1000J

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What is a resultant force.......

the forece when two or more forces are added together as vectors

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Elastic collision is........

a collision in which kinetic energy is conserved

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Equilliberium means......

an object is in equilliberium if all the forced are cancelled out, the resultant force is zero (0)

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A freebody diagram is........

a diagram that shows the forces acting on a single object.

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Friction is......

a constant force which occurs when the atoms make up the surfaces interact when rough surafces slide over one another.

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Newton's Second Law is.......

if the resultant force is not zero the motion of an object (speed or direction) changes.

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Newton's Third Law is ........

Forces come in pairs: the force of x on y and the force of y on x

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When travelling in the aire, what is the force acting upwards........

air resistance

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Name 3 examples of forces......

Either three out of: gravity weight magnetic attraction friction electrostatic attraction pull force push force upthrust air resistance tension driving force

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If a bowl were to be floating on water, what are the two forces acting upon it.......

upthrist as it is in water and weight

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What is the resultant force of a ball moving left at 15N and moving right at 7N .........

8N left

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What is the force of an object with a mass of 3,5Kg and and accelration of 80m/s/s.......

280N

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As someone opens a parachute, there is a very ________ air resistance force so she starts to _____________

large and decelarate

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What is the momentum of an object with the mass of 2000kg and a velocity of 35m/s..........

70000kgm/s

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What unit is momentum measured in........

kgm/s

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What unit is force measured in.......

N

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What unit is Work Done measured in........

J

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What unit is Power measure in.......

W (Watt)

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How much work is done when a man pushes a van against a friction force of 300N for 10m

300x10=3000J

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Other cards in this set

Card 2

Front

something that causes an objecst to move

Back

A force is.......

Card 3

Front

you have to in contact with it

Back

Card 4

Front

a force you don't have to be in conatct with

Back

Card 5

Front

is a measurement of how difficult it is to chnage the motion of an object.

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