(c) This velocity-time graph shows the motion of the sledge as it travels down a hill. 3.5
3
2.5
velocity
in m/s
2
1.5
1
0.5
0
0
2
4
6
10
12
14
16
8
time in s
(i) Calculate the distance travelled by the sledge.
(3)
I’m

Ithink the answer is d i hope it my friend message me if i’m wrong and i’ll change my answer and fix it for you

Answerthe energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.explanationwe define electric potential as the ratio electric potential energy to the charge,    then the following gives us the potential difference,      the formula  may be on your formula sheet.the change in electric potential energy would be the energy that would needed to move it from point a to point b. solving for that, we get    using q = 8.00  × 10⁻¹⁹ c and  δv = 2.00 v, we get    the energy required is 1.60 × 10⁻¹⁸ j, to three significant figures.

Answer (d) the universe had cooled enough for atoms to combine, protons and neutrons were too far apart to form nuclei;

Ithink the answer is fusion