change: A condition of the law of conservation of momentum is that no external forces are at play. Look at each of the following situations and determine if the law applies or does not apply. 1. Two cars collide on a dirt road where the force of a. Law does apply. friction is high. b. Law does not apply. 2. A bullet strikes a wooden block, causing the block to accelerate from rest. 3. Two kinetic carts collide on a frictionless surface. 4. A coin sliding on a table experiences a frictional force.
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- 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?You are standing at a stop light waiting to cross the street when you witness a collision. A 2,300 kg Ford F150 truck collides head on with a 1,300 kg Toyota Corolla. The Ford F150 is moving to the right immediately before the collision and the Corolla is initially moving to the left. The two vehicles have the same initial speed and vehicles stick together after the collision. A. What type of collision is this? B. Which vehicle will experience the greater change in momentum? C. Which vehicle will experience the greater acceleration?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 .06 kg tennis ball hits a wall with a velocity of 30 m/s and rebounds at about the same speed. What is the change in momentum of the ball from before the collision to after?
- Which one among the following statements is CORRECT? A.) Momentum is a scalar quantity B.) In an elastic collision, momentum is conserved but kinetic energy is not C.) In an elastic collision, both momentum and kinetic energy are conserved D.) In an inelastic collision, both momentum and kinetic energy are conservedAlex Morgan, one of America's best forwards, kicks a 450. g soccer ball that was moving towards her at a speed of 12.0m/s, the impact caused the ball to leave her foot with a velocity of 20.0 m/s in the opposite direction. a. If the impact lasted for 0.250s, what force (magnitude and direction) did Alex exert on the soccer ball? b. What is one thing that she could do to make the soccer ball have a larger change in momentum?An empty freight car with a mass of 10,000 kg rolls at 5 m/s along a level track and collides with a loaded car with a mass of 20,000 kg, standing at rest with brakes released. Friction can be neglected. If the cars couple together, find their speed after the collision. a. Find the decrease in kinetic energy as a result of the collision. b. With what speed should the loaded car be rolling towards the empty car for both to be brought to rest by the collision? Show the figure/fbd, given and formula used.
- Jill threw a dodgeball completely horizontal in x-direction with velocity of +5 m/s and mass of .5 kg. At the same time her friend threw a dodgeball with the same mass in the -x direction and a velocity of -2 m/s. The balls hit each other, and Jill's ball was deflected 30° above the original path, while her friend's deflected 20⁰. below the initial path. a. Ignoring gravity, solve the velocity of each ball after the collision, using a free body diagram. b. If both balls had a magnitude of 3 m/s, how much kinetic energy was "lost" during the collision?A- Using the equation f=mv/t and the example problem given in the leture answer the following problem. A kick-ball of mass 0.5 kilograms is moving at 4 meters/second after being kicked. The kick lasted 2 seconds. How much force was used to kick the ball?_____newton. B- Ft=mv. impulse = momentum. Due to this formula gymniats practice on thick mats. The mats increase the time that it takes for the gymnast to come to a stop. Thus decreasing the forces acting on the gymnast. (True or False)Object A has a mass 4 kg and is traveling to the right at speed 6 m/s. Object B is traveling to the left at 6 m/s. The objects collide head-on, and afterward each has a speed of 6 m/s. Which of the following could be the mass of object B? Select two of the answers below A. 4 kg B. 6 kg C. Negligible compared to 4 kg D. 2 kg
- 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 500-kg car traveling east at 30.0 m/s collides with an 800-kg truck traveling north at 20.0 m/s at an intersection. The two vehicles stuck together after the collision. The coefficient of sliding friction between both vehicles and the road is 0.300. Assume that the collision takes place on a level road. 1. Which of the following statements is FALSE? The kinetic energy of the system is not conserved during the collision. The friction between the vehicles and the road affects the motion of the vehicles after collision. The momentum of the car after the collision is equal to the vector sum of the momentum of the car before the collision and impulse exerted by the truck to the car during the collision. The final speed of the combined mass after the collision is equal to the sum of the initial speeds of the car and the truck. 3. Which of the following best approximates the magnitude of the IMPULSE EXERTED BY THE CAR TO THE TRUCK during the collision?