A 20.0 kg red curling rock travelling at 0.578 m/s [W] strikes a stationary 20.0 kg yellow curling rock head-on. The collision takes 4.35 ´ 10-2 s. Immediately after the collision, the yellow rock has a velocity of 0.3365 m/s [54.4° N of W]. Using the information from the above narrative, the direction of the red rock immediately after the collision is

Two balls moving toward one another collide head-on. Ball 1, with mass 0.250 kg, is initially moving to the right with a speed of 2.00 m/s. Ball 2, with mass 0.550 kg, is initially moving to the left with a speed of 1.50 m/s. Immediately after the collision, ball 1 is observed to be moving to the left with a speed of 0.950 m/s.(a) Draw the ‘before’ and ‘after’ scenarios, clearly labelling the known velocities. (1)(b) Find the velocity of ball 2 immediately after the collision. (2)(c) Was the collision elastic or inelastic? Support your answer.

A .71-kg billiard ball moving at 2.5 m/s in the x-direction strikes a stationary ball of the same mass. After the collision, the first ball moves at 2.17 m/s, at an angle of 30.0° with respect to the original line of motion. Assuming an elastic collision (and ignoring friction and rotational motion), answer the following questions to find the struck ball's momentum after the collision. Using the components of the struck ball's momentum after the collision, find the resulting angle of the struck ball's motion below the horizontal.

A student is driving a 1200 kg car at 42.0 m/s. He is tail-gating ("drafting") behind a 2500 kg truck that is going 40.0 m/s in the same direction as the car. (DON'T EVER DO THIS! IT IS EXTREMELY DANGEROUS AND ILLEGAL) The car collides with the truck and the two vehicles are stuck together. How fast are they moving after the collision?

At the local radio controlled (RC) airfield, a 2.4 kg RC plane strikes a 1.2 kg aerial drone that is hovering stationary at an altitude of 9.6 m.  Just after the collision, the two aircraft are stuck together and moving to the east at 9 m/s at an altitude of 9.6 m. What is the speed (in m/s) of the plane just prior to the collision?

In walking the body goes through both a breaking impulse and a propulsion impulse. The breaking phase lasts .3 seconds and the propulsion phase lasts .33 seconds. The body goes through a decrease of the vertical velocity of .1 m/s as they come into the ground during the breaking impulse and an increase in the vertical velocity of .4 m/s during the propulsion.  The individual has a weight of 700 newtons. What is the acceleration horizontally for both the breaking impulse and the propulsive impulse if the coefficient of friction is .32?

Two billiard balls of mass m (gr) collide with their oblique center. a) Find the post-collision velocity of the balls. b) Find the energy loss that will occur during the collision. m=170 kg   V1= 3.3 m/s   V2=2.8 m/s  Ɵ 1=40   Ɵ 2=38  e=0.5

Need help checking a practice problem. Thanks!

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