A particle (particle 1) is traveling along the positive x-axis with a constant speed of 50.0 m/s. It collides head-on with an identical particle moving towards it with a speed of 39.0 m/s. If both masses are 1.0 kg, what is the final speed of the first particle just after the collision? Two significant digits.

A mass of 2.00 kg is released on top of a frictionless incline. The height if its release with respect to the ground is 25.0 m. Calculate the kinetic energy at the moment it reaches the ground. Three significant digits please.

A mass of 2.0 kg is being accelerated by a net force given by the force diagram, where magnitudes N and N. If the initial velocity of the particle is m/s, what is the velocity of the particle after 12.0 s? 

A mass of 2.00 kg is released on top of a frictionless incline. The height if its release with respect to the ground is 25.0 m. Calculate the kinetic energy at the moment it reaches the ground. Three significant digits please.

A particle is traveling along the positive x-axis with a momentum of 50.0 . It encounters an average force of    for a time of  s . Calculate the final momentum of this particle after the brief encounter. Use three significant digits.

If the initial (total) momentum of a two-(identical) particle system approaching head-on is zero, then this means that just after they collide perfectly elastically, they must come to an immediate rest to conserve momentum.

Assume a rotator’s angular position is given by , where and are constants. If at , t = 0 , rads/s and  rads/s2, what is the constant ? Three significant digits.

A particle moving with an initial velocity of m/s encounters a force of   N over a displacement of 2.00 m. If the mass of the particle is 1.00 kg, calculate the magnitude of the new velocity after a displacement of 2.00 m. 

A turntable with a radius of 0.57 m is turning counterclockwise with constant angular speed. A particle on the rim has a tangential speed of 1.2 m/s. What is the tangential speed of an identical particle located 0.21 m from the center of the turntable? Two significant digits.

A 1.00 kg pendulum bob has a length of 1.17 m long. You displace the bob and release it from rest. What is the kinetic energy of the bob at the equilibrium point? Let the equilibrium point be zero potential energy. Round to three significant figures.