A wheel accelerates with a constant angular acceleration of 4.5 rad/s2. If the initial angular velocity is 1.0 rad/s, what is the angle the wheel rotates through in 2.0 s?

The angle which the wheel rotates through in 2 seconds is  

Explanation:

From the question we are told that

    The constant angular acceleration of the wheel is  

     The initial angular velocity of the wheel is  

     The time duration considered is  

Generally from kinematic equation we have that

=>  

=>  

d) physical means can be used to separate the components of air.

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