A boat attempts to cross a 170 m wide river to reach a dock directly on the other side.  The boat heads out directly across the river, perpendicular to the bank, with the motor propelling it at 15.0 m/s across the water, but the river flowing at 5.0 m/s immediately begins pushing it down river.  How far down river ( in meters) from the dock does the boat end up when it reaches the opposite shore?

A cannon fires a projectile with a speed 35 m/s at an angle of 250 up from the horizontal over level ground.  What maximum height  does it reach?

A 5.00 gram bullet fired from a rifle of barrel length 0.650 m leaves the barrel with a speed of 325 m/s.  Assuming constant acceleration down the barrel, what was the force  acting on the bullet?

prob 22 pic.png Determine the magnitude of the acceleration  for m = 2.0 kg, F1 = 4.0 N, F2 = 5.0 N, F3 = 3.0 N, θ1 = 35.00, and θ2 =20.00.

prob 14 pic.png If the cement bag has a mass of 25.0 kg and θ1 = 75.00, θ2 =35.00, what is the tension T1?

prob 16 pic.png Determine the normal force on the object for m = 12 kg, F = 75 N , and θ = 250.

p7.png Two objects are connected by a rope over a massless, frictionless, pulley. The coefficient of kinetic friction  the surface and m2 is μ = 2.5  Assume m2 slides up the ramp, and determine the acceleration of the masses for m1 = 40.0 kg, m2 = 10.0 kg, and θ= 30.00

prob 12 pic.png Determine the normal force (in N) on the object for m = 5.0 and θ = 35.00.

prob 20 pic.png An object of mass m = 80 kg is pulled over a frictionless surface by two horizontal forces as shown.  Determine the direction of the acceleration counter-clockwise relative to the forward direction  for F1 = 175 N, F2 = 130 N, q1 = 200, and q2 = 350.

p11.png Determine the maximum angle the incline can be raised to without the crate sliding from rest if the coefficient of static friction between the surface and the crate is 0.65 and mass of the crate is 25 kg.