IGCSE Mathematics ch.7 (general)

the time of a car traveling is measured is seconds, for how much seconds the car went in steady speed?

• 6 sec

• 5.5 sec

• 1 minute

• 4 sec

Answer explanation

The horizontal line means when the speed is constant (steady speed)

calculate the deceleration of the car.

• 0.5 m/s²

• 9 m/s²

• 10 m/s²

• 5.5 m/s²

• 6 m/s²

Answer explanation

deacceleration

V-U

t

Find the DISTANCE of the points (5,6) (8,-1)

• 57

• 58

• √11

• √58

• 7.15

Answer explanation

The distance formula is shown

a graph is shown where the green line is the tangent, find the gradient of the tangent.

• 3

• 2.2

• 4.7

• 4

• 5

Answer explanation

To get the gradient:

1- find two points

2- do the formula

y² - y¹ over

x² - x²

get the gradient of the slope shown

• -1/3

• -1/2

• 1/2

• 3

Answer explanation

Steps:

1- find two points

2- do formula

y² - y¹

x² - x¹

which graph shows that the car is going with constant speed from the point 0?

• A

• B

• C

• D

Answer explanation

in distance time graph the must be heading up (not horizontal) to b at constant speed

but in speed time graph the graph must be horizontal

find the MISSING ENDPOINT

when the midpoint is (3,2)

and the other endpoint is (1,-2)

• (3,2)

• (5,2)

• (5,-3)

• (5,6)

Answer explanation

the endpoint can be gotten by thinking of a number which if you add it with the other endpoint you get the midpoint either if it is X or Y

what is the formula of acceleration

• v-u

  t

• u-v

  y

• y-5

  u

• y-u

  v

a tangent must be drawn when x is 0

which tangent is correct?

• green

• gray

type a great subject

(math?)

Answer explanation

Math is Fun!