Two persons on ice skates stand face to face and then push each other away (see figure below). Their masses are 50 and 55 kg. Find the ratio of their speeds immediately afterward. V55 kg Which person has the higher speed? 0 50-kg skater O 55-kg skater 15. [/2 Points] DETAILS OBINPHYSS 3.P.012. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A running back with a mass of 98 kg and a speed of 5 m/s collides with, and is held by, a 147-kg defensive tackle going in the opposite direction. How fast must the tackle be going before the collision for their speed afterward to be zero? :lm/s Need Help? 1G. [-/2 Points] DETAILS OBINPHY58 3.P.013. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A motorist runs out of gas on a level road 230 m from a gas station. The driver pushes the 1,100 kg car to the gas station. If a 140 N force is required to keep the car moving, how much work (in J) does the driver do? :1: Need Help