1993 paper 2

[ANDYQ]

q 2b(iii) do u use acceleration as 1.6 or -0.1

[ANDYQ]

q3b(ii) not a clue how to start

[Admin]

2.b.iii. use a = -0.1.
3.b.ii. U = 15 m/s, V = 0 m/s, a = ?, S = 20m, t =?. Find a THEN use F = ma where m = 2400Kg

[ANDYQ]

paper 2 1b

[Admin]

Paper II Q 1.b.
The ball loses 1.7 J in the bonuce so,
Ek at impact = Ek rebound + 1.7
0.5m x 4.5^2 = (0.5m x 4^2) + 1.7
0.5m x 20.25 = (0.5m x 16) + 1.7
10.125m = 8m + 1.7
2.125m = 1.7
m = 0.8kg