✔ 最佳答案
It should be B, (1) and (2)
(1), Work done = Fs
= area under the graph
= xy /2 J
So, (1) is correct.
(2). By Newton's 2nd law of motion
F = ma
From the graph, F is +ve throughout the journey, so acceleration is positive also.
When acceleration is positive, velocity increases.
So, the velocity increases for the whole journey and statement (2) is correct.
(3) As mentioned in (1), area of the graph is work done, not distance.
Distance is presented in the x-axis.
So, this statement is wrong.