2. Two balls (A) and (B) have an elastic collision. Before the collision, the kinetic energies of balls (A) and (B) are 27.5 J and 7.00 J, respectively. After the collision, ball (A) has a kinetic energy of 9.50 J and ball (B) has a speed of 4.60 m/s. What is the mass of ball (B)?
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- Two objects are on a collision course. Object #1 has a mass of 13.4 kg and an initial velocity of 12.3 m/s i. Object #2 has a mass of 7.53 kg and an initial velocity of -3.69 m/s i. If the system is isolated and the objects stick together upon colliding, what amount of energy is lost in the collision? Assume that all quantities are good to 3 significant figures, All numeric answers should be entered rounded to 3 significant figure.A railroad car of mass 2.85 x 10^4 kg moving at 2.60 m/s collides and couples and with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. A. what is the speed of the three coupled cars after the collision? B. how much kinetic energy is lost in the collision?A truck of mass 1.5x10^4 kg travelling at 85 km/h [S] collides with a car of mass 1.2x10^3 kg travelling at 30 km/h [S]. The collision is perfectly inelastic. a) Calculate the magnitude and direction of the velocity of the vehicles immediately after the collision. b) Determine the decrease in kinetic energy during the collision
- A 2.0-g particle moving at 5.8 m/s makes a perfectly elastic head-on collision with a resting 1.0-g object. (a) Find the speed of each particle after the collision. 2.0 g particle 1.93 m/s 1.0 g particle 3.86 X m/s (b) Find the speed of each particle after the collision if the stationary particle has a mass of 10 g. 2.0 g particle 1.9 X m/s m/s 10.0 g particle (c) Find the final kinetic energy of the incident 2.0-g particle in the situations described in parts (a) and (b). KE in part (a) J KE in part (b) In which case does the incident particle lose more kinetic energy? case (a) case (b)Two remote control cars with masses of 1.15 kilograms and 1.98 kilograms travel toward each other at speeds of 8.41 meters per second and 3.97 meters per second, respectively. The cars collide head-on, and the less massive car recoils with a speed of 2.25 meters per second.a. What is the final speed of the second car? b. How much kinetic energy is lost in this collision?A hockey puck moving at 0.460 m/s collides with another puck that was at rest. The pucks have equal mass. The first puER is deflected 37.0° to the right and moves off at 0.360 m/s. What is the speed of the second puck after the collision? m/s
- An elastic collision takes place between a 0.050-kg toy car moving at 10 × 10² m/h and a 0.014-kg toy car moving at 20 × 109 mm/yr. What is the kinetic energy of the system? Express your answer with the appropriate units.A railroad car of mass 2.60 x 104 kg moving at 2.90 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? 1.77 m/s (b) How much kinetic energy is lost in the collision? 1.69e04 Additional Materials eBookA 83.2 g marble moving at 10.2 m/s approaches and collides head-on with a stationary 41.8 g marble. Assuming that the collision is elastic, what are the corresponding kinetic energy of each marble?
- A railroad car of mass 3.00 ✕ 104 kg moving at 5.00 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. (a) What is the speed of the three coupled cars after the collision? m/s(b) How much kinetic energy is lost in the collision? J1. A bullet of mass m, = 0.0500 kg is fired into a block of wood of mass m₂ = 0.850 kg. This block of wood is hanging from light wires. The bullet embeds in the block and the bullet and block combined swing up to a height of h=0.350 m. What was the speed of the bullet (vu) right before it hit the block of wood (ignore friction)? a. 4.64 x 10³ m/s b. 2.62 m/s c. 44.5 m/s d. 47.1 m/s e. 123 m/s1. A firecracker travels straight up at 75.0m/s and explodes into two pieces. The smaller piece carries one third of the firecracker's mass and shoots off horizontally at 48.0m/s west. Determine the speed and direction of the other piece directly after the explosion. 2. Three blocks slide on a smooth surface. Initially, the first block (m1=1.0kg) moves at 3.0m/s to the right, the second block (m2=2.0kg) is at rest, and the third block (m3=3.0kg) moves to the left at 0.50m/s. First, m1 collides elastically with m2 and recoils to the left. Afterwards, m2 and m3 collide and stick. Calculate, a. the velocities of m1 and m2 after the first collision. b. the velocity of m2 and m3 after the second collision.