GCSE COMBINED SCIENCE HIGHER: PHYSICS 2018 PAPER 2

Notes:

question 1)

1.1 Its acceleration would decrease to zero.

The resultant force on it would decrease to zero.

1.2

 move the second light gate closer to the first

1.3

Mistake -  1.26667 m/s to the power of 2 is wrong

Correction -  give values to 2 significant figures

Mistake -  6.7 m/s to the power of 2 is wrong

Correction - discard the anomalous result and recalculate the mean

1.4   resultant force is directly proportional to acceleration

1.5  look at the answers

1.6  as mass increases, acceleration decreases

question 2)

2.1   tick the first box

2.2     permanent magnet has no effect on the aluminium

iron is attracted to the permanent magnet

only the permanent magnet can be repelled by the permanent magnet

2.3

Question 3)

3.1 momentum = mass x velocity

3.2    200 = m x 3.2 

m = 200 / 3.2

answer: 63

3.3

question 4)

question 5)

question 6 )

question 7)

my answers: