
Question 1 10 pts 1) A mass of 4 kg is moving at some velocity and...
A mass of 2 kg is moving at some velocity and collides inelastically with a 12 kg moving in the -x direction at 14 m/s. After the collision, both masses are moving in the -x direction and the total kinetic energy of both masses is 571 Joules. What is the total kinetic energy of both masses before the collision in Joules?
3) A mass of 9 kg is moving at 9 m/s in the +x direction which collides inelastically with a mass (mass 2) of 3 kg. After the collision, the masses are moving at 5 m/s in the +x direction. What is change in total KE in the collision, in Joules? If negative, include a negative sign.
2) A mass of 4 kg is moving at 9 m/s in the +x direction which collides inelastically with a mass (mass 2) of 7 kg. After the collision, the masses are moving at 3 m/s in the +x direction. What is the average force on mass 2 in Newtons if the collision takes 0.1 seconds? If in the negative x direction, include a negative sign.
2) A mass of 4 kg is moving at 9 m/s in the +x direction which collides inelastically with a mass (mass 2) of 7 kg. After the collision, the masses are moving at 3 m/s in the +x direction. What is the average force on mass 2 in Newtons if the collision takes 0.1 seconds? If in the negative x direction, include a negative sign.
10 pts Question 6 6) A mass of 8 kg is moving at 20 m/s in the +x direction and collides in a perfect elastic collision with a 3 kg mass moving in the +x direction at 6 m/s. If the masses are in contact for 0.15 seconds, what is the average force on the 8 kg mass in Newtons? Include a negative sign if in the negative x direction.
i) Mass 1 is initially moving in the +x direction and has 20 Joules of kinetic energy. It collides perfectly elastically with mass 2 moving at in the -x direction with 14 Joules of kinetic energy. After the collision, mass 2 has 20 Joules of kinetic energy. How much kinetic energy does mass 1 have after the collision in Joules? (Note: the masses are not needed to answer this question.) ii) Mass 1 of 10 kg is initially moving at...
A 5 kg cart moving at a velocity 2 m/s in the +x-direction collides completely inelastically (i.e. they stick) with a second cart of mass 1.5 kg which is initially moving at a velocity of 10 m/s in the +y-direction. What is the total initial kinetic energy? J. What is the total x-component of momentum just before the collision? Kg m/s. What is the total y-component of momentum just before the collision? Kg m/s. What is the total x-component of momentum just after...
A mass of 5 kg is moving at 16 m/s in the +x direction and collides in a perfect elastic collision with a 2 kg mass moving in the +x direction at 10 m/s. If the masses are in contact for 0.15 seconds, what is the average force on the 5 kg mass in Newtons? Include a negative sign if in the negative x direction.
Question 6 7 pts A mass of 5 kg is moving across a frictionless surface at 13 m/s in the +x direction. It collides (perfectly) ELASTICALLY with a second mass of 9 kg moving in the -x or +x direction. After the collision, the 9 kg mass is moving at 3 m/s in the +x direction. If the collision took 0.03 seconds, what is the average force acting on the 5 kg mass in Newtons? It's a force, so if...
A cart of mass 0.20 kg starts moving at velocity 3.0 m/s collides inelastically with an initially stationary cart of mass 0.40 kg. (A) If the carts stick together, what is their combined velocity immediately after the collision? (B) How much kinetic energy is lost in the collision?