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Higher Physics > ODU > Flashcards

ODU Flashcards

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1
Q

What is speed

A

Speed is the distance an object covers in a set time

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2
Q

What is velocity

A

Velocity is the measure of the displacement covered in a set time

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3
Q

What is the horizontal component for resolving vectors

A

V=VcosX

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4
Q

What is the vertical component for resolving vectors

A

V=VsinX

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5
Q

What do you ice to remember 5 eq’s of motion

A

uVast

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6
Q

What does the gradient = in a displacement time graph

A

M= displacement/ time which = velocity
pg 9

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7
Q

What is Newton’s first law of motion

A

An object will remain stationary or move at a constant speed unless acted on by an unbalanced force

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8
Q

What is Newton’s second law of motion

A

F=ma

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9
Q

What is Newton’s third law of motion

A

If A exerts a force on B, B will exert an equal but opposite force back on A

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10
Q

If there is no acceleration on the lift what happens to the weight and tension

A

The tension will be upwards
And weight will be downwards
Unbalanced force= 0

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11
Q

If there is an upward acceleration
Reading= mg+ma

A

The tension increases
Weight will be constant
Meaning you feel heavier

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12
Q

If there is a downward acceleration
Reading= mg-ma

A

Tension will decrease
Weight is constant Meaning
Meaning you will feel lighter

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13
Q

For resolution of forces look at diagrams

A

Pg 19

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14
Q

forces on a slope
What is the equation if the weight is parallel

A

W=mgsinX

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15
Q

Forces on a slope
What happens when the weight is perpendicular to the slope

A

W=mgcosX

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16
Q

What is work done

A

Is a transfer of energy

17
Q

What are the two rules about the conservation of energy

A

Energy is always conserved
Energy cannot be created or destroyed, only converted from one form to another

18
Q

Conservation of momentum, equation

A

Total momentum before= total momentum after
Only in the absence of external forces

19
Q

What is a collision

A

A collision is an event when two or more objects apply a force to each other for a relatively short time

20
Q

What is a projectile

A

A projectile is an object which continues its motion by its one inertia and is influenced only by the downward force of gravity

21
Q

What is it called when an object is falling at a constant velocity

A

Terminal velocity

22
Q

Newtons universal law of gravitation equation

A

F= Gxm1xm2/r squared

23
Q

What does newtons law of gravitation state

A

It states that the gravitational attraction between two objects is directionally proportional to the mass of each object and is inversely proportional to the the square of their distance apart

24
Q

Special relativity

If. A passenger is sitting next to you is the observer then what is their observation

A

You are stationary

Higher Physics (2 decks)

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