A21200 kg sailboat experiences an eastward force 42700 n due to the tide pushing its hull while the wind pushes the sails with a force of 85000 n directed toward the northwest (45◦ westward of north or 45◦ northward of west). what is the magnitude of the resultant acceleration of the sailboat? answer in units of m/s 2 .

Aball bearing at 220.0 °c is dropped into a cup containing 250.0 g of water at 20.0 °c. the water and ball bearing come to a temperature of 30.0 °c. what is the heat capacity of the ball bearing in j/°c? (hint: how are the algebraic signs of q related for the ball bearing and the water? )

Ineed extreme for task 2. my student number is 571721. many to whoever solves this correctly, im in debt to you.

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)