2.4 sec
24 sec
144 sec
240 sec
Correct answer is B
Speed = 30 kmh\(^{-1}\)
= \(\frac{30 \times 1000}{3600}\)
= \(\frac{25}{3} ms^{-1}\)
Time = \(\frac{Distance}{Speed}\)
= \(\frac{200}{\frac{25}{3}}\)
= \(\frac{200 \times 3}{25}\)
= 24 seconds
The population of a village is 5846. Express this number to three significant figures ...
Factorize 2e\(^2\) - 3e + 1 ...
The diagonals of a rhombus are 16cm and 30cm long. What is the perimeter of the rhombus ...
If 2x - 3y = -11 and 3x + 2y = 3, evaluate \( (y - x)^2\)...
Find p in terms of q if \(\log_{3} p + 3\log_{3} q = 3\)...
Find the standard deviation of the numbers 6, 9, 10, 8 and 7 ...
The bar chart above shows the scores of some students in a test. Use it to answer this ...
Divide the sum of 8, 6, 7, 2, 0, 4, 7, 2, 3, by their mean ...