\fQuestion 2: a} John is pushing a sled in the gym. The sled mass is 30 kg and the weight of the plates on top of it are 490.5 M. John is applying a force to a sled with an angle of 30, and the coefcient of dynamic friction between the sled and the ground is pd = (1.1. He wants to move the sled from U to 20 meters in 15 seconds. How much is the force that he needs to apply if the sled starts to move from stationary conditions? b} What is the sled average Iyelp-city going from U to 20 meters