A 20-kg child is on top of a slide was pushed down by his brother giving him an initial speed of 2 m/s down the slide. What is the child's speed at the bottom of the slide if the slide is 5 m high and 10 m long and the force of friction between the child and the slide is 10 N?​

The slotted link is pinned at o, and as a result of rotation it drives the peg p along the horizontal guide. compute the magnitude of the velocity and acceleration of p along the horizontal guide. compute the magnitudes of the velocity and acceleration of p as a function of θ if θ=(3t) rad, where t is measured in seconds.

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •  

Which of the following are appropriate acceleration units?