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A car of mass 1500kg is travelling at 10 ms-1 along a horizontal road. A brake force of 3000N brings it to rest. Calculate the deceleration of the car and the distance travelled by the car whilst decelerating.

To calculate the deceleration of the car we must re-arrange F=ma to make a the subject of the formula, a = F/m. We then put in the numbers to get, 3000/1500, to get a deceleration of 2 ms^-2. To get the dist...
Answered by • Physics tutor
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What are the key components of DNA replication and what are their functions?

Original DNA template; DNA replication requires an existing double stranded DNA to copy. Free DNA nucleotides; free bases (ATCG) that can be added to the new DNA strand. DNA polymerase; the enzyme required t...
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Answered by Sophie M. • Biology tutor
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What is Natural Law?

Natural law is the theory that an eternal, absolute moral law can be determined by reason. Key scholars are Thomas Aquinas and Aristotle. Aquinas developed the Four Tiers of law, placing natural law on the s...
ZW
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Find the stationary points of the curve y=x^4-8x^2+3 and determine their nature.

First we will differentiate y to find dy/dx= 4x 3 -16x. Stationary points exist at dy/dx=0 so we set 4x 3 -16x=0 and solve for x. x(4x 2 -16)=0. So x=0 or 4x 2 -16=0. If 4x 2 -16=0 then x 2 =4 and so x=2 or ...
Answered by • Maths tutor
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To what extent do pressure groups undermine democracy?

Undermine democracy - On on hand, some pressure groups are elitist, particularly insider pressure groups (ASH). Furthermore, minority interests may be overlooked by big pressure groups representing a mass is...
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Answered by Eliza C. • Politics tutor
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