PLEASE help me with my physics homework?need urgent!!!

Posted on 2017-10-17 17:31:00 in Physics by ASHELEY

I just need help with a few questions. 

1.) 
You row a boat against (the opposite direction as the river flows) a river that flows 4.3 M/S. The velocity of your boat is 3.7 M/S relative to the water. What is the velocity of your boat relative to the shore? Assume the direction of your boat is positive. 

2.) 
Ralph is mowing the backyard with a push mover that he pushes with a force of 122 N at an angle of 30.0° to the horizontal. What is the vertical component of the force exerted by Ralph? 

3.) 
You row a boat across (perpendicular to the shore of) a river that flows 5.8 M/S. The velocity of your boat is 6.8 M/S relative to the water. What is the velocity of your boat relative to the shore? 

Thank you so much!

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