Question

A man ice-skates at a constant speed of 5m\s for 4 seconds. he then slows down gradually to a stop with a deceleration of 10.5m\s^2.
a. How long (how much time) did it take him to stop? (i need a graph... e.g. velocity time graph or something)
b. how far did he travel overall? (Another graph. e.g. displacement graph or something im confused on what type of graph to draw)

Answer 1

Vi= 5m/s
t = 4s
a = -10.5m/s^2

Not sure how you'd draw the graph here. But I think we can find the displacement

Answer 2

so what does vi mean? velocity something?

Answer 3

Vi - initial velocty. And slope of that line going down is -10.5

Answer 4

so this would be the a . question or the b?

Answer 5

For b, you'd find the area under the curve of V

Answer 6

that was a btw

Answer 7

something like that