1.35 kg 0.500 kg A 1.00 kg mass is placed on the 1.35 kg cart. A 0.500 kg mass is attached to the cart by a pulley system. This ensures that the applied force remains constant. The table exerts a force of friction of 1.25N on the cart. What is the acceleration of the cart?

A pack of four velociraptors have caught a human running through their jungle. Each raptor grabs one limb and pulls as hard as it can. One raptor exerts a force of 50.0 N at an angle of 20.0 ̊. Another exerts a force of 30.0 N at an angle of 130.0 ̊, while a third exerts a force of 90.0 N at 160.0 ̊. If the meal remains stationary, i.e. the total force is 0, at what angle and with what force is the fourth raptor pulling? Note that force is a vector. Force is measured in units called Newtons which is abbreviated N.

You work for a moving company are forced to pull two crates along the floor as shown in the figure below. The two crates are connected by a very light rope (it's mass is much smaller than that of either block). You want to get done as soon as possible and pull as hard as you possibly can and manage to maintain a pulling force of F=600.0 N. As a result the crates are moving with an unknown constant acceleration a. Their masses 50.0 kg and m = 20.0 kg, and the coefficient of kinetic friction between each crate and the floor is are mi H =0.300. g=9.81 m/s m2 F

Superman is applying a 17,000 N horizontal force to try and stop a speeding locomotive.  This train has a mass of {9004} kg, it is on level, horizontal track, and gravity in Metropolis is 10 N/kg.  The train is originally travelling at 25 m/s, and the brakes have failed. (Friction force is zero).   Draw a Force Body Diagram of the train, labelling and calculating all forces. What is the acceleration of the train? How many seconds does it take for Superman to stop the train? How far does the train travel in that time?