A 3 kg block of wood stops a 5 g bullet. Immediately after collision, the speed of the bullet-wood combination is 0.3 m/s. What was the original speed of the bullet?
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A: mass of rail road car = m1= 10.303kg its initial speed = V1i= 30 m/s mass of second car = m2= 10.303…
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Q: A body with mass of 5 kg is moving at a speed of 2 m/s and collides inelastically with another body…
A: Given: Mass of moving body (m) = 5 kg. Mass of standing body (M) = 3 kg. Velocity of moving body (v)…
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Q: Two balls approach each other with equal speeds of 20 m/s. One ball has a mass of 5.0-kg and the…
A: m1 = 5 kg m2 = 10 kg v1 = 20m/s v2 = - 20 m/s
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- Betty (mass 47 kg) stands on an ice rink as Bubbles (her hyperactive puppy, mass 6.9 kg)) runs towards her and leaps into her arms. If they move off together with a speed of 0.77 m/s, how fast (in m/s) was Bubbles moving when Betty caught her?A 2,800 kg truck jumps the median and clobbers a 940 kg station wagon in a head-on collision. You are tasked with determining the truck's initial speed for insurance purposes. An observer states that the station wagon was traveling at a speed of 25.1 m/s and that after the collision, the two vehicles stuck together and were moving at a speed of 24.4 m/s in the direction the truck was originally moving. What was the truck's original speed?The Hulk (200kg of pure angry muscle)collides head-on with a truck (2500kg). If the Hulk was running at 10.0m/s and the truck was moving at 15.0 m/s in the opposite direction, after they stick together, what is their speed (in m/s)? Either the Hulk or the truck needs a negative initial velocity.
- A 1500 kg car traveling eastwards at 25 m / s collides with a 2500 kg load truck going north at a speed of 20 m / s as shown in the figure. Find out the magnitude and direction of the speed of the wreck after the collision, taking into account that the vehicles had a completely inelastic collision.A 3.7-kg model rocket is launched, shooting 58.6 g of burned fuel from its exhaust at an average speed of 604 m/s. What is the speed of the rocket after the fuel has burned (ignore gravity and air resistance). Answer: + m/sA 0.17-kg red billiard ball moving at 1.6 m/s strikes a blue billiard ball of the same mass moving in the opposite direction at 0.50 m/s. The blue billiard ball rebounds and travels at 0.80 m/s after the head-on collision. What is the final velocity of the red billiard ball after collision? 0.15 m/s 0.30 m/s 0.42 m/s 0.06 m/s
- Joey has a mass of 50 kg and he is standing at rest on the friction-less ice. His partner tosses him a ball with a mass of 10 kg and a speed of 6 m/s. Joey catches the ball firmly and he slides backward on the ice with a speed of Which below? 4 m/s 1 m/s 6 m/sThe mass of a regulation tennis ball is 57 g (although it can vary slightly), and tests have shown that the ball is in contact with the tennis racket for 30 ms.(This number can also vary, depending on the racket and swing.) We shall assume a 30.0 ms contact time. One of the fastest-known served tennis balls was served by “Big Bill” Tilden in 1931, and its speed was measured to be 73 m/s. Suppose that the positive direction of the x-axis is along the direction of motion of the ball after Big Bill's hit. What is the x-component of the force exerted by Big Bill on the tennis ball in his record serve? If Big Bill's opponent returned his serve with a speed of 55 m/s what is the x-component of the force he exerted on the ball, assuming only horizontal motion?A 3.9-kg model rocket is launched, shooting 49.3 g of burned fuel from its exhaust at an average speed of 588 m/s. What is the speed of the rocket after the fuel has burned (ignore gravity and air resistance). Answer: + m/s