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BMAT Physics > TRANSLATIONAL MOTION > Flashcards

TRANSLATIONAL MOTION Flashcards

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1
Q

what is a vector

A

A physical quantity that has both direction

and magnitude

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2
Q

what is a scalar

A

A physical quantity that has magnitude but no direction

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3
Q

what does an arrow indicate about a vector

A

Arrows can be used to reveal the direction of the vector

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4
Q

what does arrow length indicate about a vector

A

The length of the arrow will reveal the magnitude of the vector

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5
Q

is 5 metres (m) a vector or a scalar

A

scalar

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6
Q

is 30m/s east a vector or a scalar

A

vector

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7
Q

is 5 miles north a vector or a scalar

A

vector

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8
Q

is 20 degrees celsius a vector or a scalar

A

scalar

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9
Q

is 256 bytes a vector or a scalar

A

scalar

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10
Q

is 4000 calories a vector or a scalar

A

scalar

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11
Q

what is the value for tan 30, 45 and 60

A

√3/3
1
√3

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12
Q

A lady walks 4 m east, 2 m south, 4 m west, and finally 2 m north, what is her displacement

A

0m

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13
Q

A lady walks 4 m east, 2 m south, 4 m west, and finally 2 m north, how much total distance did she cover

A

12m

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14
Q

what type of quantity is speed

A

scalar

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15
Q

what type of quantity is velocity

A

vector

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16
Q

how are the units of velocity expressed

A

length/time

e.g. m/s
ft/s
miles/hour

17
Q

what is the equation for speed

A

speed = distance/time

18
Q

what is the equation for velocity

A

velocity = displacement/time

19
Q

A man walks 8 km east in 2 hours and then 7 km west in 1 hour.
a) What is the man’s average speed for the whole journey?

A 
distance = 15km (8 + 7)
time = 3 hours (2+1)

speed = distance/time
= 15/3
= 5

5km/h

20
Q

A man walks 8 km east in 2 hours and then 7 km west in 1 hour.
b) What is the man’s average velocity for the whole journey?

A 
displacement = 1km
time = 3hours

displacement/time
= 1km / 3
= 0.33333 recurring

0.33km/h

21
Q

what is acceleration

A

rate of change in velocity

22
Q

what type of quantity is acceleration

A

vector

23
Q

what are the units for acceleration

A

m/s2 or

length of time squared

24
Q

what is the formula for acceleration

A

Acceleration = rate of change of velocity/time

a = (vf - vi) / t

25
Q

how do you calculate acceleration from a table of values

A

a = (vf - vi) / t

  1. take the final velocity and minus it from the initial velocity
  2. divide value by time taken
26
Q

what is uniformly accelerated motion

A

involves constant acceleration

27
Q

what does constant acceleration mean

A

both the magnitude and direction of acceleration must remain constant

28
Q

what happens if a particle exhibits uniform accelerated motion

A

it will accelerate at a constant rate

29
Q

what is the symbol for time

A

t

30
Q

what is the symbol for displacement

A

x

31
Q

what is the symbol for velocity

A

v

32
Q

what is the symbol for acceleration

A

a

33
Q

what are the three linear motion equations

A
  1. x = xo + vot + 1/2at^2
  2. v = vo + at
  3. v2 = vo2 + 2ax
34
Q

what is the average velocity equation

A

Vavg = 1/2 (v + vo)

35
Q

what is negative acceleration

A

deceleration

BMAT Physics (12 decks)

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