Atest car travels in a straight line along the x-axis. the graph in the figure shows the car’s position x as the function of time. find it’s instantaneous velocity at point b.

Velocity is defined as the change in position per unit time, which is literally the slope of the position vs time graph. Thus, the instantaneous velocity at point B is the slope of the graph at point B, which is approximately

(40m - 20m) / (3s - 0s)

= 6.67 m/s.

increases it

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min