marble with mass ?? = 2.5 [g] moves eastward with speed ?? = 1.75 [m/s]. It then collides with another marble of mass ?? = 1.25 [g] and is moving northward with a speed ?? = 2.30 [m/s]. After the collision, marble ? now moves at 50° north of east, while marble ? moves at 20° south of east. 2 A. What is the speed of marble ? after the collision? B. What is the speed of marble ? after the collision? C. Is energy lost or gained in the system

A railroad car of mass 2500 kg is moving with a speed of 4 m/s. It collides and couples with another railroadcar of the same mass as it moves in the same direction with an initial speed of 2 m/s.a) What is the speed of the two cars after the collision? ?b) If the collision happened within 0.02s, how big is the force impacted on each car?

Part d only.

A mass m1= 3kg slides down slippery ramp, reaching a speed v=9 m/s at the bottom. After reaching the level ground m1 collides with mass m2= 4kg at bottom, sticking together in a perfectly inelastic collision. The combined mass then slides over a floor, finally coming to rest after travelling a horizontal distance x= 6m. a.) What was the height of the ramp, assuming that m1 started from rest? b.) How fast were the combined masses m1 and m2 moving after sticking together?

Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1450 kg and is approaching at 6.5m/s due south. The second car has a mass of 750 kg and is approaching at 16 m/s due west. What is the magnitude of the final velocity, in meters per second, of the cars. What is the direction of the final velocity, in degrees south of west, of the cars. What is the change in kinetic energy, in joules, for the collision? (This energy goes into deformation of the cars.)

Two cars are approaching a perpendicular intersection without a stop sign. Car 1 has a mass m₁ = 800 kg and is heading north at V₁ 15 m/s. Car 2 has mass m2 = 700 kg and is heading west at an unknown speed v2. The two cars collide at the intersection, and stick together as a result of the collision. The police report stated that after the collision, the two cars moved together in a direction 40° west of north and stopped after sliding d 35 m from the collision point. = = Find the speed of car 2 before the colision. v2 - 18 What is the speed of the cars immediately after the collision? v= 17 m/s X What is the coefficient of kinetic friction between the cars and the pavement? μk = - What is the magnitude of the impulse exerted on car 2 during the collision? J₂ = m/s X 0.120 8110 N-S What is the magnitude of the impulse exerted on car 1 during the collision? J₁ If the collision lasted 0.3 seconds, then what is the magnitude of the average force on car 1 during the collision? Favg N X X…

what is the right answer? is it -v or -v/f