A 1,295-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,600-kg truck moving in the same direction at 20.0 m/s (see figure below). The velocity of the car right after the collision is 18.0 m/s to the east. Two images depicting a before and after scenario of a car colliding with the back of a truck. • Before: The car is moving at a velocity of +25.0 m/s. This is shown as a rightward- moving horizontal arrow above the car. The truck is moving at a velocity of +20.0 m/s. This is shown as a rightward-moving horizontal arrow, shorter than that of the car, above the truck. • After: The car is shown crashing into the back of the truck. At this point, the velocity of the car is shown to be +18.0 m/s. This is shown as a rightward-moving horizontal arrow above the car. The velocity of the truck is shown to be v. This is shown as a rightward- moving horizontal arrow, longer than that of the car, above the truck. +25.0 m/s +20.0 m/s +18.0 m/s Before After (a) What is the velocity of the truck right after the collision? (Round your answer to at least three decimal places.) m/s (east) (b) How much mechanical energy is lost in the collision? Account for this loss in energy.

Determine the momentum ( in kg•m/s) of the eraser/doll system just after the collision. Determine the speed ( in m/s) of the pencil just prior to the collision. Determine the magnitude of the acceleration ( in m/s/s ) of the pencil/doll system as it it sliding to a stop .

complete the following 3 steps. 1. Indicate what your chosen system is (which objects are included in the system?) as well as your initial and final instants. Explain how your choice will help you solve the problem. 2. Draw a momentum-impulse bar chart for your chosen system that is consistent with the information given. 3. Write an equation using the bar chart as a guide and solve for any unknowns. A 6-kg bowling ball moving at 3 m/s hits a single 2-kg pin, knocking it forward at 6 m/s. If the collision took 0.050 s, what average force was exerted on the pin?

A 5000.0-kg truck moving rightward with a speed of 5.00 km/hr collides head-on with a 1000.0-kg car moving leftward with a speed of 20.0 km/hr. The two vehicles stick together and move with the same velocity after the collision. Determine the post- collision velocity of the car and truck. Final velocity = km/hr %3D

Treat the collision as elastic. A moving billiard ball hits an identical (except for color) stationary ball.

8.) In this photo, a fire extinguisher provides the impulse for a hallway rocket cart. Which is NOT true about the motion of the rocket cart and person? a.) The cart and person are propelled as a result of gas from the fire extinguisher pushing against air in the room. b.) The force of the gas on the cart and person is equal and opposite to the force of the person and cart on the expelled gas.      c.) The momentum of the cart and person is equal in magnitude and opposite in direction to the momentum of the expelled gas.

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m V Question 3: The diagram below shows two carts moving in opposite directions on a frictionless surface. When the two carts collide they stick together. 6 m/s 1 m/s 4.0 kg 6.0 kg 4.0 Frictionless surface 4 a) Fill in the mvp table below for the collision: 4.0 kg-cart 6.0 kg cart two carts combined Р b) Which cart experiences a greater change of momentum during the collision? c) Which cart experiences a greater impact force during the collision? X.

A 1,170-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,100-kg truck moving in the same direction at 20.0 m/s (see figure below). The velocity of the car right after the collision is 18.0 m/s to the east. Two images depicting a before and after scenario of a car colliding with the back of a truck. Before: The car is moving at a velocity of +25.0 m/s. This is shown as a rightward-moving horizontal arrow above the car. The truck is moving at a velocity of +20.0 m/s. This is shown as a rightward-moving horizontal arrow, shorter than that of the car, above the truck. After: The car is shown crashing into the back of the truck. At this point, the velocity of the car is shown to be +18.0 m/s. This is shown as a rightward-moving horizontal arrow above the car. The velocity of the truck is shown to be v. This is shown as a rightward-moving horizontal arrow, longer than that of the car, above the truck. (a) What is the velocity of…