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A car travelling at 14 m/s has to make an emergency stop so applies the brakes and it takes 1.5s to become stationary. What distance has the van travelled in that time?

Assuming constant deceleration we can use the equation s = t(u+v)/2, where u=14m/s, v=0m/s and t=4s. Inputting these values we have that the distance travelled s = 1.5(14)/2 = 21/2 = 10.5m u = the starting v...
CJ
Answered by Caitlin J. • Physics tutor
2932 Views

Two fair six sided dice, called A and B, are rolled and the results are added together. The sum of the dice is 8, what is the probability that two fours were rolled?

We know that A+B = 8 so we should first count the number of ways that the two dice could total 8. (A = 2, B = 6), (A=3, B=5), (A=4, B=4), (A=5, B=3) , (A=6, B= 2) -- this gives 5 possible waysWe also know th...
JM
Answered by Jak M. • Maths tutor
4216 Views

Find the gradient of the straight line with equation 4x+3y=12

To answer the question the equation given must be rearranged into the straight line formula, y=mx+c, where m is the gradient of the slopeminus 4x from both sides, we now have 3y=12-4xthen divide through by 3...
CN
Answered by Constance N. • Maths tutor
10449 Views

Solve the inequality x^2+2x-8<0

-4&lt;x&lt;2Work out using whiteboard
AS
Answered by Abdullah S. • Maths tutor
4485 Views

How should I answer a question with an extract?

When looking at an extract of text, it is important to take note of the beginning and ending of the passage. Why has the exam board chosen to start/end the passage here? Is it because it is a soliloquy, the ...
AJ
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