ISA practice questions – the answers for light gates and electronic timer expt.

ISA practice questions – the answers for light gates and electronic timer expt.

1.       Independent is angle, dependent is velocity

2.       + or – 0.02 (1/2 range)

3.       + or - 1.77%

4.       1^st row 2.88, 3.13, 3.33 then 2^nd row b8.29, 9.82, 11.07, last row 0.530, 0.616, 0.707

5.       + or – 1 degree

6.       0.05 m/s

7.       0.75%

8.       Row for 15 and 15 degrees have the smallest range

9.       At largest angle = 0.75%+ 0.75% so 1.5%

10.   Plot accurately!

11.   V² is directly proportional to sinѲ, straight line that goes through the origin

12.   Mark for 8cm minimum gradient triangle drawn, mark for correct values, answer for gradient should be 15.7 , allowance of + or – 0.3, 2 or 3 sf only

13.   See markscheme for this paper on March 2012 blog post, ISA is PHA3T Q10