3. The total external force on an object is F=10t i+ 60j (N). At t=0, the objects velocity is V=20j (m/s) At t=12 sec., the x-component of its velocity is 48 m/s. a. Determine the mass of the object. b. Determine the impulse applied to the object from t=0 to t=6 sec. c. Determine the objects velocity at t=6 sec.

d. v.> V, > V. v.> V, = V e. %3D 4. A 3.54 kg thin plate is hanging at rest from a massless wire when it is struck by a 10.0 g bullet travelling to the right at 320 m/s. After the collision the bullet instantly comes out the other side of the plate at 42 m/s. How high does the plate swing up in the y-axis.

A 1.30 kg mass (mass 1) moves to the right with a speed of 2.50 m/s and collides with a stationary 1.30 kg mass (mass 2). Assuming the collision is elastic, what are the velocities of the first and second masses following the collision?  A. mass 1: 1.25 m/s to the right, mass 2: 1.25 m/s to the right mass  B. mass 1: 0.00 m/s, mass 2: 2.50 m/s to the right   C. mass 1: 1.25 m/s to the left, mass 2: 1.25 m/s to the right  D. mass 1: 2.00 m/s to the right, mass 2: 0.50 m/s to the right

10. An explosion breaks a 34.0-kg object initially at rest into three parts. Part (1) has a mass mı = velocity of 52.0 m/s due west. Part (2) has a mass m2 magnitude of the velocity of part (3)? m/s 5.20-kg and a velocity of 79.0 m/s due north. What is the f60 s 3.80-kg and a 60 ssf6 60 sS