14. The diagram shows some people are waiting in a queue at a supermarket. The queue moves
forward each time a person leaves the checkout. Person X spends seven minutes in the
queue before reaching the checkout. The graph shows how distance changes with time for
d
Calculate the wetge speed of perves
entity
person X
checkout
person X
15
A rabbit runs across the road in i
factors that affect the chance of the
Distance (m)
8
6
5
4
2
7
6
8
0
1
2
3
4 5
Time (5)
a.
What is the initial length of the queue?
b.
Explain how you could use the graph to work out the number of times person X is
stationary
c.
state the equation linking average speed, distance moved and time taken. d.calculate the average speed of person x in the queue. Also, mention the units of each entity.
Answers
Answer:
. Centre Number Candidate Number Write your name here Surname Other names Total Marks Paper Reference Turn over P44250A ©2015 Pearson Education Ltd. 1/1/1/1/1/ *P44250A0132* Physics Unit: KPH0/4PH0 Science (Double Award) KSC0/4SC0 Paper: 1P Wednesday 14 January 2015 – Afternoon Time: 2 hours You must have: Ruler, calculator Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name, centre number and candidate number. Answer all questions. Answer the questions in the spaces provided – there may be more space than you need. Show all the steps in any calculations and state the units. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . Information The total mark for this paper is 120. The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. Advice Read each question carefully before you start to answer it. Keep an eye on the time. Write your answers neatly and in good English. Try to answer every question. Check your answers if you have time at the end. Pearson Edexcel Certificate Pearson Edexcel International GCSE KPH0/1P 4PH0/1P KSC0/1P 4SC0/1P
2. 2 *P44250A0232* EQUATIONS You may find the following equations useful. energy transferred = current × voltage × time E = I × V × t pressure × volume = constant p1 × V1 = p2 × V2 frequency = 1 time period f T = 1 power = work done time taken P W t = power = energy transferred time taken P W t = orbital speed = 2 orbital radius time period π × 2 r v T π× × = Where necessary, assume the acceleration of free fall, g = 10 m/s2 .
3. 3 *P44250A0332* Turn over Answer ALL questions. 1 Mains electricity is used in circuits at home. (a) Double insulation is needed for safety when there is (1) A no circuit breaker B no earth connection C no fuse D no switch (b) A fuse is used so that (1) A an earth connection is not needed B the appliances are more efficient C the circuit cannot overheat if there is a fault D the user cannot touch a live wire (c) Most lamps at home have their own switch. This is because the lamps are connected (1) A in parallel B in series C to a fuse D to an earth wire (Total for Question 1 = 3 marks)
Answer:
2376
Explanation:
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