16,17,18,19

it has a mass of 491 kg and a speed of 17.1 m/s right after the collision, what is the velocity of the first car after this sudden collision? A) 6.22 m/s B) -10.7 m/s C) 10.7 m/s D) 21.7 m/s 16 A rubber ball and a lump of clay have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The clay sticks to the wall. Which one of these objects experiences the greater momentum change? A) the clay B) the ball C) Both of them experience the same non-zero momentum change. D) Both of them experience zero momentum change. 17 A 2.0-kg ball moving eastward at 3.0 m/s suddenly collides with and sticks to a 4.0-kg ball moving northward at 2.0 m/s. What is the magnitude of the momentum of this system just after the collision? A) 6.0 kg . m/s B) 14 kg . m/s C) 8.0 kg . m/s D) 2.0 kg . m/s E) 10 kg . m/s 18. The graph in the figure shows the x component F of the net force that acts for 10 s on a 100-kg crate. What is the change in the momentum of the crate during the 10 s that this force acts? 5.0 10 -10 A) 25 kg . m/s B) -75 kg . m/s C) -100 kg . m/s D) 75 kg . m/s E) -25 kg . m/s 19. A forklift pushes a 100-kg crate, starting from rest, with a horizontal force of magnitude F. The graph in the figure shows the x component of this force as a function of time. What is the instantaneous velocity of the crate at time t = 10 s? 5.0 10 -10 B) -75 cm/s C) 0.00 cm/s D) 75 cm/s E) -25 am/s A) 25 cmy/'s