Beatrice stands at rest on her skateboard. The mass of Beatrice and the skateboard together is 75 kg. Isaac Newton throws a 3.0 kg ball horizontally to the right at 4.0 m/s to Beatrice, who catches it.  (a)  What is the final speed of Beatrice and the skateboard? (b)  How much mechanical energy was lost in the process?

Q: A 10 kg block is released from rest at the top of a 40 degree incline that is 4 m long. If the…

A: mass of object = 10 kginitial velocity ,u= 0 m/sdistance moved on inclined surface,d= 4 mangle of…

Q: What is the velocity of a 1000 kg car with 480,000 J of kinetic energy? Can you determine its…

A: Given: The mass of the object is 1000 kg. The kinetic energy of the object is 480000 J.

Q: You drop a ball from a height of 1.9 m , and it bounces back to a height of 1.4 m . What fraction of…

A: height = 1.9 mheight = 1.4 mWhat fraction of its initial energy is lost during the bounce?What is…

Q: A ball of mass m is dropped from a height h above a surface. After bouncing the ball bounces to a…

A: The potential energy of an object with mass 'm' at a height 'h' is P=mgh.

Q: A softball has kinetic energy (KE) of 81 J as it flies across home plate at a velocity (v) of 30…

A:

Q: A 64 kg human sprinter can accelerate from rest to 10 m/sm/s in 3.2 s . During the same time…

A: P=∆E∆t=0.5mv2f-v2i∆t

Q: (A)100 J (B) 300 J (C)50 J (D) 125 J 4) Consider an 80 kg man and 320 kg horse both running along a…

A: According to the guidelines issued by the company we are supposed to answer only first question.…

Q: In a “Top Fail” video (https://openstaxcollege.org/l/21topfailvideo) , two women run at each other…

A: Given data The mass of both women is m = 50 kg. The velocity of one woman to the right is v­1 = 2…

Q: Block A and block B are held together with a compressed spring between them. When they are releaed,…

A:

Q: Two ice skaters begin at rest then push off each other on very smooth ice and glide away with…

A:

Q: Calculate the kinetic energy in joules of a 1400 kgkg automobile moving at 15 m/sm/s . Express your…

A: Given data:  Mass (m) = 1400 kg Speed (v) = 15 m/s Required: Kinetic Energy (KE)

Q: (https://openstaxcollege.org/l/21topfailvideo), two women run at each other and In a "Top Fail"…

A: The system's total kinetic energy must be determined. We are aware that each lady weighs 50 kg,…

Q: Dr. Evil has a tank of sharks with frickin' laser beams attached to their heads! His henchmen throw…

A:

Q: An object of mass 1000 kg initially having a velocity of 20m/s accelerates to a final of 129 m/s.…

A: Given: mass of the object (m) = 1000 Kg            initial velocity (u) = 20 m/s            final…

Q: A person of mass 71 kg is thrown down a slide until he falls into a swimming pool. The initial…

A: Mass (m) of a person = 71 kg     Height (h) of water = 12 m                     Speed (v) = 12.7802…

Q: Which of the two has greater kinetic energy?

A: Given data, Two cars A and B of masses 200 g and 500 g respectively. It is having same speed. Which…

Q: Mike then takes his now 1175 kg car and crashes it at 50 m/s into the back of a 1600 kg Jeep…

A:

Q: Two identical asteroid collides wherein before the collision asteroid A is travelling at 40 m/s.…

A:

Q: A athlete punches a 60-kg bag, with the speed of fist at 8 m/s. After the punch, the bag flies away…

A: Given data: The mass of the boxer bag is, M= 60 kg The mass of the moving part of the hand is, m= 5…

Q: A person was trying to catch a ball with a horizontal velocity of 48 m/s. The mass of the ball was…

A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Q: A person was trying to catch a ball with a horizontal velocity of 48 m/s. The mass of the ball was…

A: The objective of the question is to find the kinetic energy of the ball before it struck the…

Q: A 100 gram body falls 1500 mm to the surface of the earth. What is its kinetic energy as it hits the…

A:

Q: A 10 g bullet moving at 380 m/s strikes a ballistic pendulum of mass 3.5 kg. The bullet emerges with…

A:

Q: A 0.5-kg ball in the air has an initial velocity Vo = [-40 i] m/s + [-40 J] m/s. It falls for a…

A: Given: Mass, m=0.5 kgvelocity, Vo=[-40 i] m/s + [-40 J] m/sInitial kinetic energy, Ki=800 J   We…

Q: A father racing his son has 1/4 the kinetic energy of the son, who has 1/2 the mass of the father.…

A:

Q: Calculate the kinetic energies of (a) a 2000.0-kg automobile moving at 100.0 km/h; (b) an 80.-kg…

A: The kinetic energies are to be evaluated for the following cases: a) mass, m=2000 Kg automobile…

Q: An Airbus A380 weighing 890,000 lb is moving down the runway on its takeoff roll with a velocity of…

A:

Q: You are driving 2018 Honda Civic and are stuck behind 2018 Toyota Tundra. a) What is the increase in…

A: Known value: Mass of 2018 honda civic is m = 1247 kg Given: Initial speed is u = 5 m/s Final speed…

Q: n object with a mass of 6-kg has a velocity of v=(-i+4j) m/s.  What is the kinetic energy of the…

A: Given mass of an object m = 6 kg velocity of an object v→ = (-i +4j ) m/s To Find  Kinetic energy of…

Q: Jane has a mass of 50 kg and starts from a high of 5 m above the ground. At the bottom of her swing,…

A: mass of jane (m) = 50 kg initial height of jane (h) = 5 m mass of tarzan (M) = 70 kg

Q: 6.00 × 105 J of work are done on a 2210 kg car while it accelerates from 15.0 m/s to some final…

A:

Q: A railroad car of mass 2.55  104 kg is moving with a speed of 3.94 m/s. It collides and couples with…

A: (a)Use the law of conservation of momentum.The equation for the given situation is,

Q: a plate resting at a table falls and breaks into two pieces. the kinetic energy of one piece is four…

A: As the plate fall down under gravity so the velocity for both pieces remains same  Let the mass of…

Q: Which has the greater kinetic energy, Object 1 with a mass of 2.2 kg and a velocity of 0.29 m/s or…

A:

Q: Jane and Jake are looking at what happens to body 1 of mass m and body 2 of mass 2m, initially at…

A: The mass of the body 1 is m and the mass of the body 2 is 2m. Assume that equal force is applied on…

Q: What is the Kinetic Energy ? Cart Mass, mc . 284 kg Angle, θ 49 degrees Distance, d . 75 m…

A: Mass of cart (mc) = 0.284 kg average velocity (v) = 1.466 ms

Q: A running man has half the kinetic energy of a boy half his mass. The man speeds up by 1.0m/s and…

A:

Q: 5. A0.20-kg rocket in a fireworks display is launched from rest and follows an erratic flight path…

A: Mass, m = 0.2 kgInitial velocity, vi = 0 m/sInitial height, hi = 0 mFinal height, hf = 29 mWork, W =…

Q: Ronaldo is playing outside and shoots a ball of mass 2 kg horizontally with a speed of 8.0 m/s…

A: velocity of the cart after the ball strikes it = (-1/17) m/sInitial kinetic energy of the system =…

Q: A 5.50-kg object is initially moving so that its x-component of velocity is 6.00 m/s and y-component…

A: Given that:-Mass, m=5.50 kgVx=6 m/secVy=-1.90 m/secWe know that:-V=Vx2+Vy2=6 m/sec+-1.90 m/sec2=6.29…

Q: 16. A 20 000-kg meteorite from outer space is headed directly toward Earth with a speed of 3.0 km/s.…

A: The mass of the meteorite, m=20000 kg The speed of the meteorite, vi=3km/s The distance above the…