momentum parallel to the floor must remain zero, since the net external force acting on the plate has no component parallel to the floor. Using the data shown in the drawing find (a) the mass of piece 1 and (b) the mass of piece 2. 3.00 m/s 25,0 1.79 m/s IN2 45.0 3 = 1.30 kg 3.07 m/s

Sphere m1 with a mass of 1.0 kg collides with m2, which also has a mass of 1.0 kg, in an elastic collision.  If v2f= 15 m/s and θ2= 40°, determine v1i.  (Hint:  An elastic collision requires that the after-collision angle between the two velocities must be 90°.)

A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 5.60 m/s in 0.812 s. What are the magnitudes of the linear impulse and the average total force experienced by a 62.0 kg passenger in the car during the time the car accelerates? linear impulse |kg-m/s average force

A 48.3 kg student runs down the sidewalk andjumps with a horizontal speed of 4.34 m/sonto a stationary skateboard. The studentand skateboard move down the sidewalk witha speed of 4.07 m/s. a) Find the mass of the skateboard.Answer in units of kg. I got 3.204177 kg b) How fast would the student have to jumpto have a final speed of 5.27 m/s?Answer in units of m/s. I'm getting 5.6196 m/s, but my online homework is prompting me with an incorrect guess. My work is shown in the picture.

Find the center of mass of the three-mass system shown in the figure relative to the mass m = 1.47 kg

A woman weighing 61.5 kg stands at one end of a 120-kg raft that is 6.00 m long. The other end of the raft is 0.500 m from a pier. So, before the woman moves, she is at a total distance of 6.50 m away from the pier. The woman walks toward the pier until she gets to the other end of the uniform raft and stops there. What is the distance between the uniform raft and the pier?

A 2500 kg truck traveling at 80 km/h collides with another car of mass 1000 kg traveling at 50 km/h in the same direction. The two cars stick together after the collision. Their speed immediatley after the collison is  1. 42.85 km/hr 2. 51.75 km/hr 3. 71.42 km/hr 97.77 km/hr none

Sphere m1 with a mass of 1.0 kg collides with m2, which also has a mass of 1.0 kg, in an elastic collision.  If v2f= 15 m/s and θ2= 40°, determine v1i.  (Hint:  An elastic collision requires that the after-collision angle between the two velocities must be 90°.)

3. Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 1.50 x 105 kg and a velocity of (0.35 m/s)î , and the second having a mass of 1.10 x 105 kg and a velocity of –(0.10 m/s)î . What is their final velocity? V = (0.30 m/s)î V21 = -(0.12 m/s)î

A set of three masses is arranged as shown below. Calculate the position of the center of mass of the system, i.e., find the coordinates (xcm, Ycm) in units of meters. У (m) 2.00 2.00 kg 5.00 kg 1.00 10.00 kg + x (m) 1.00 2.00