A boat crosses a 150 m wide river flowing at 8.0 m/s to reach a dock directly on the other side.  If the boat motor can propel the boat at 10.0 m/s across the water, how long (in seconds) will it take the boat to reach the dock assuming it travels in a straight line)?

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 9 pic.png A person is suspended by a rope as shown.  If the person is simply hanging from the rope (acceleration = 0 m/s2), determine the tension in the rope if the mass of the person is 95 kg.

prob 12 pic.png An object slides down a frictionless incline as shown.  Determine the acceleration in (m/s2) for θ = 350.

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 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.

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

A mass m1 = 5.0 kg collides with a mass m2.  The mass m2 accelerates at 4.0 m/s2 and m1 decelerates at 6.0  m/s2.  What is the mass of  m2?

p13.png The coefficient of kinetic friction between the surface and m2 is μ = 0.30.  Determine the acceleration of the masses for m1 = 15.0 kg and m2 = 10.0 kg.

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.