What is the linear speed of a point on the edge of a 0.30 m diameter grinding wheel rotating at 1600 rpm.
what is the acceleration of the point?

Explanation:

The linear speed is given by:

So, replacing the given values:

Since we have a circular motion, the acceleration is directed radially toward the centre of the circle, that is the centripletal acceleration, which is defined as:

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