TRANSLATIONAL MOTION

Question 1

what is a vector

Answer 1

A physical quantity that has both direction

and magnitude

Question 2

what is a scalar

Answer 2

A physical quantity that has magnitude but no direction

Question 3

what does an arrow indicate about a vector

Answer 3

Arrows can be used to reveal the direction of the vector

Question 4

what does arrow length indicate about a vector

Answer 4

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

Question 5

is 5 metres (m) a vector or a scalar

Answer 5

scalar

Question 6

is 30m/s east a vector or a scalar

Answer 6

vector

Question 7

is 5 miles north a vector or a scalar

Answer 7

vector

Question 8

is 20 degrees celsius a vector or a scalar

Answer 8

scalar

Question 9

is 256 bytes a vector or a scalar

Answer 9

scalar

Question 10

is 4000 calories a vector or a scalar

Answer 10

scalar

Question 11

what is the value for tan 30, 45 and 60

Answer 11

√3/3
1
√3

Question 12

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

Answer 12

0m

Question 13

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

Answer 13

12m

Question 14

what type of quantity is speed

Answer 14

scalar

Question 15

what type of quantity is velocity

Answer 15

vector

Question 16

how are the units of velocity expressed

Answer 16

length/time

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

Question 17

what is the equation for speed

Answer 17

speed = distance/time

Question 18

what is the equation for velocity

Answer 18

velocity = displacement/time

Question 19

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?

Answer 19

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

speed = distance/time
= 15/3
= 5

5km/h

Question 20

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?

Answer 20

displacement = 1km
time = 3hours

displacement/time
= 1km / 3
= 0.33333 recurring

0.33km/h

Question 21

what is acceleration

Answer 21

rate of change in velocity

Question 22

what type of quantity is acceleration

Answer 22

vector

Question 23

what are the units for acceleration

Answer 23

m/s2 or

length of time squared

Question 24

what is the formula for acceleration

Answer 24

Acceleration = rate of change of velocity/time

a = (vf - vi) / t

Question 25

how do you calculate acceleration from a table of values

Answer 25

a = (vf - vi) / t 1. take the final velocity and minus it from the initial velocity 2. divide value by time taken

Question 26

what is uniformly accelerated motion

Answer 26

involves constant acceleration

Question 27

what does constant acceleration mean

Answer 27

both the magnitude and direction of acceleration must remain constant

Question 28

what happens if a particle exhibits uniform accelerated motion

Answer 28

it will accelerate at a constant rate

Question 29

what is the symbol for time

Answer 29

t

Question 30

what is the symbol for displacement

Answer 30

x

Question 31

what is the symbol for velocity

Answer 31

v

Question 32

what is the symbol for acceleration

Answer 32

a

Question 33

what are the three linear motion equations

Answer 33

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

Question 34

what is the average velocity equation

Answer 34

Vavg = 1/2 (v + vo)

Question 35

what is negative acceleration

Answer 35

deceleration