Q3. Object A of 0.2 kg is sliding at a speed of UA = 3 m/s along x-axis and hitting a stationary object B of 0.1x kg at an angle on a frictionless surface as shown in Figure 3, where x is the last digit of your student number (e.g. 0.18 kg if your number is 12345678A). The glancing collision is elastic. After collision, object A has a speed of VA = 2 m/s. (before collision) Figure 3 (a) Find the speed of object B (vs) after collision; (after collision)
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- A block of wood, with mass 1.50 kg, rests stationary on horizontal ground.The coefficient of kinetic friction between the block and the ground is 0.933.A bullet, with mass 0.250 kg, moving horizontally, hits and sticks into the block of wood.We find that the speed of the block of wood, with the bullet embedded in it, just after the collision is 11.5 m/s. a) Calculate the speed of the bullet before hitting the block of wood. m/s(b) Calculate how far the block slides along the ground before coming to rest. Also include a diagram showing physical situation and coordinates. A sniper fires a bullet from a 7.5 kg rifle. The rifle recoils toward the sniper at 0.36 m/s2. The bullet accelerates through the rifle’s barrel at 180 m/s2. How many grams is the bullet’s mass?A bullet with mass m1 = 3 g is fired into a wooden block of mass m2 = 2 kg, that hangs like a pendulum. The bullet is embedded in the block (complete inelastic collision). The block with the bullet embedded in it goes h = 40 cm high after collision. Determine the speed of the bullet before it hit the block. a. 1570 m/s c. 1670 m/s b. 1870 m/s d. 1770 m/s
- 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?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?An ice hockey player of mass m1 = 81.5 kg hits a puck of mass m2 = 0.165 kg, giving the puck a speed of v = 35 m/s. a. If both are initially at rest and if the ice is frictionless, how far, in terms of the variables in the problem, does the player recoil in the time it takes the puck to reach the goal, a distance d away? b. If both are initially at rest and if the ice is frictionless, how far, in centimeters, does the player recoil in the time it takes the puck to reach the goal, 15 m away?
- A 0.250 kg toy car moving with a speed of 0.820 m/s collides with a wall. The figure shows the force exerted on the car by the wall over the course of the collision. What is the magnitude of the velocity, or final speed, of the car after the collision?A 0.13 kg baseball has a momentum of p = 11 kg*m/s as it is pitched toward home plate. A 4.2 kg bat swings at the baseball with a momentum of 28 kg*m/s and is in contact with the ball for 0.06 s. Assume the batter doesn't follow through like they should but instead the bat is at rest immediately after being in contact with the baseball (like bunting it). a.What is the magnitude of the velocity of the baseball just before coming in contact with the bat? b.What is the magnitude of the velocity of the baseball immediately after being struck by the bat? c.What is the magnitude of the impulse on the ball?m2 m h=7.0m ☐ Figure 1: Diagram for Problem 15 15) During a test investigation, a 40-gram bullet is fired towards a stationary block of 1.0-kg mass causing a perfectly in-elastic collision. After the collision, the block-bullet system slides up a smooth ramp, eventually coming to rest at an elevation of 7.0 meters. Calculate the speed of the bullet. Must show all steps including the equations being used.
- 3Block A of mass m = 1.48 kg moving on a horizontal plane with velocity of vj = 1.71 m/s collides with Block B of the same mass at rest before the collision. After the collision, Block A stops. What is the velocity of Block B Vf after collision? Assume there is no friction between the blocks and the horizontal plane. Keep three significant figures for the answer.Two cars each with a speed of 30 m/s are sliding on frictionless ice at an intersection and collide. Car #1 has mass 1400 kg and Car#2 has mass 1300 kg. The cars stick together after colliding. A) What is the angle the combined mass comes off the collision at ? B)What is the speed of the combined mass?