Maths

Question 1

Sin of an angle?

Answer 1

Opposite divided by Hypotenuse

Question 2

Cos of an angle?

Answer 2

Adjacent divided by Hypotenuse

Question 3

Tan of an angle?

Answer 3

Opposite divided by Adjacent

Question 4

Vertical component of a right-angled triangle?

Answer 4

Opposite

Question 5

Horizontal component of a right-angled triangle?

Answer 5

Adjacent

Question 6

Vertical component formula?

Answer 6

velocity sin (angle)

Question 7

Horizontal component formula?

Answer 7

velocity cos (angle)

Question 8

Hypotenuse formula?

Answer 8

A squared + B squared = C squared

Question 9

Formula of a straight line?

Answer 9

Y = MX + C

Question 10

What does ‘M’ mean in the formula of a straight line?

Answer 10

The gradient of a line

Question 11

Formula for the gradient of a line?

Answer 11

M = increase in Y divided by increase in X

Question 12

What does ‘C’ mean in the formula of a straight line?

Answer 12

C = Y intercept

Question 13

What is a Y intercept?

Answer 13

Where the line crosses the Y axis

Question 14

When does acceleration = zero in a velocity vs time graph?

Answer 14

At the highest and lowest peaks of the line

Question 15

When does maximum negative acceleration occur in a velocity vs time graph?

Answer 15

When the line is sloping downward and towards the right

Question 16

What does acceleration equate to in a velocity vs time graph?

Answer 16

The gradient

Question 17

What is the top angle of a right angled triangle? Sin/cos/tan?

Answer 17

Sin

Question 18

What is the right angle of a right angled triangle? Sin/cos/tan?

Answer 18

Tan

Question 19

What is the opposite angle to the right angle of a right angled triangle? Sin/cos/tan?

Answer 19

Cos

Question 20

How many meters are in a kilometre?

Answer 20

1000

Question 21

How many seconds are in an hour?

Answer 21

3600

Question 22

How do you turn km/hr into m/s?

Answer 22

1000(km) divided by 3600

Question 23

vGRF = 1800{1+(rs/3)} what rs produces a vGRF of 4500N?

Answer 23

• Rearrange the equation so rs is on its own
• What you do to one side of the equation you must do to the other side of the equation
• rs = 3{(vGRF/1800) - 1}
• rs = 3{(4500/1800) - 1} = 3{2.5 - 1} = 3{1.5} = 4.5

Question 24

Formula for speed?

Answer 24

v = d/t