A dog weighing 36 kg, is standing on a flatboat so that he is 23 m from shore. He walks 16 m on the boat toward shore and then halts. The boat weighs 65 kg, and one can assume there is no friction between it and the water. How far is he from shore at the end of this time?

Q: What average force is necessary to stop a 16 g bullet travelling at 260 m/s as it penetrates into a…

A: Using kinematic equation, the expression for find acceleration of the bullet is v2=u2+2asa=v2-u22s…

Q: A bullet of mass m-8 g is fired into a block of mass M=2.5 kg initially at rest at the edge of a…

A: The mass of the bullet is m = 8 g = 8 x 10-3 kg. Assume the initial velocity of the bullet is…

Q: At a forensic science lab class a student tries to measure the speed of a bullet of mass m, - 0.040…

A: Given:  Bullet mass, mb=0.04 kg Clay target mass, mt=2 kg Max. height, h=0.3 m Standard data:…

Q: A 1.0kg cart moving right at 5.0m/s on a frictionless track collides with a second cart moving right…

A: Given Mass of the cart 1(M1) = 1.0 kg Initial speed of the cart 1(V1) = 5m/s Initial speed of the…

Q: The superheroine Xanaxa, who has a mass of 63.5 kg, is pursuing the 74.3 kg archvillain Lexlax. She…

A: Mass of the super heroine m=63.5 kg When she dives off from the building the change in height is…

Q: A 75-kg man is riding in a 30-kg cart at 2.0 m/s. He jumps off in such a way as to land on the…

A:

Q: A boy shoots his pellet gun at a piece of cheese that sits, keeping cool for dinner guests, on a…

A: Muzzle velocity = 64 m/sec   Velocity of bullet just before hitting the cheese = 64 m/sec   Momentum…

Q: As part of a safety investigation, two 1400 kg cars traveling at 20 m/s are crashed into different…

A: Given mass of car m=1400 kgspeed of car u=20 msCars are crashed into different barriers .

Q: A hand pushes block A (ma = 3 kg) with a constant force Nand. A 75 N for a distance Ax = 2 m along a…

A: In the elastic collision, both the energy and the momentum are conserved. Whereas, in an inelastic…

Q: a 3000 kg truck is driving at 20 m/s north. it collides head-in with a 1200 kg car travelling south…

A:

Q: A 1200 kg car is traveling at 3.0 m/s and strikes a wall. The car bounces off the wall with a…

A:

Q: A 5 kg dog sits in a stationary, 27 kg sled on a frictionless, icy lake. The dog jumps out of the…

A:

Q: Your mass is 69.6 kg, and the sled s mass is 20.9 kg. You start at rest, and then you jump off the…

A: person's mass, mp=69.6 kgmass of sled, ms=20.9 kginitial speed of both person and sled together, u =…

Q: In a dramatic rescue mission, Dr. Porter was up on a 15-meter-high cliffside where she saw a box of…

A:

Q: A freight train is being assembled in a switching yard and so at rest at the beginning. Car 1 has a…

A: Given: The mass of the car1 is m1= 65x103 kg. The velocity of the car1 is 0 m/s. The mass of the…

Q: Two figure skaters are coasting in the same direction, with the leading skater moving at 5.5 m/s and…

A:

Q: Emma and Katie are racing along in their new wagon. Upon reaching the bottom of the hill traveling…

A: Given Katie speed at the bottom of the hill = u = 13.2 m/s Distance between Katie and her teddy bear…

Q: The accident involved car A of mass 1900 kg which crashed into stationary car B of mass 1100 kg. The…

A: Given: The mass of car A is mA=1900 kg. The mass of car B is mB=1100 kg. The coefficient of kinetic…

Q: A bullet of mass m = 8.00 g is fired into a block of mass M = 250 g that is initially at rest at the…

A: Mass of bullet (m) = 8 g mass of block (M) = 250 g height of table (h) = 1 m horizontal distance…

Q: Determine the velocity for each car after the collisions.

A: As per the work-energy theorem, Here, K, Wf, m, v, f, d, and θ represent the car’s kinetic energy,…

Q: A bowling ball with a mass of 7.0 kg strikes a pin that H mass of 2.0 kg. The pin flies forward with…

A: The conservation of momentum P states that the amount of momentum remains constant when there are…

Q: Blake stands in a canoe in the middle of a lake. The canoe is stationary. Blake holds an anchor with…

A: a) Given:- ma= mass of anchor= 15 kg va= veloctiy of anchor= 8 m/s mb= mass of blake= 115 kg mc=…

Q: A 45.1 kg block is sliding along a frictionless surface with a speed of 65.4 m/s.  It collides with…

A: Mass of object 1, m1 = 45.1 kg Mass of object 2, m2 = 76.3 kg Initial speed of object 1, u1 = 65.4…

Q: A car with a mass of 1850kg is traveling east with a speed of 8.5m/s. It collides head-on with a car…

A: To determine,The velocity (magnitude and direction) of the two cars after the collision.given,mass…

Q: Two ice-skaters are travelling in the positive x direction with speeds of 7.5m/s and 3m/s with the…

A:

Q: A 15 kg tuna fish moving horizontally to the right at 5 m/s swallows a 2 kg dalagang bukid that is…

A:

Q: A girl of mass mg is standing on a plank of mass mp. Both are originally at rest on a frozen lake…

A: The girl plank system is isolated, so horizontal momentum is conserved.   The expression for the law…

Q: A golf ball of mass 0.045 kg is hit off the tee at a speed of 34 m/s . The golf club was in contact…

A:

Q: A golf ball of mass 0.058 kg is hit off the tee at a speed of 25 m/s. The golf club was in contact…

A:

Q: What average force is necessary to stop a bullet of mass 20 g and speed of 250 m/s as it penetrates…

A:

Q: A cart of mass 5 kg is held on the ramp at a height of 2.5 m. Another cart of mass 5 kg is on a…

A:

Q: In a collision, a 1200 kg car initially moving at 30 m/s comes to a stop in 0.5 second. The…

A:

Q: A 1,400 kg car traveling at 31 m/s has a head-on collision with a 55,000 kg tank traveling at 5.0…

A: Given: The mass (m1) of the car is 1400 kg. The speed (v1) of the car is 31 m/s. The mass (m2) of…

Q: A rubber bullet of mass m = 0.025 kg traveling at velocity vo an iron block of mass M = 15 kg…

A: Mass of bullet ( m ) = 0.025 kg Velocity of bullet ( v0 ) = 50 m/s  Mass of iron block ( M )= 15 kg…

Q: 4.00 m/s 60.0 kg 120 kg A 60.0-kg person running at an initial speed of 4.00 m/s jumps onto a 120-kg…

A:

Q: A 2500-kg car traveling at 20 m/s is chasing a second car of mass 3500 kg that is traveling at 7 m/s…

A:

Q: During an automobile crash test, a 1000 kg car is sent towards a cement wall at a speed of 14 m/sec…

A:

Q: A railroad car of a mass m is moving at speed v when it collides with a second railroad car of mass…

A:

Q: A bullet of mass 0.01 kg is fired horizontally into a block of wood of mass 2 kg. The wood is…

A: It is given that, m=0.01 kgM=2 kgh=0.1 m

Q: Emma and Katie are racing along in their new wagon. Upon reaching the bottom of the hill traveling…

A:

Q: Two figure skaters are coasting in the same direction, with the leading skater moving at 6.5 m/s and…

A:

Q: An 20 kg ice boat is coasting on a frozen lake with a speed of 4 m/s. Friction between the ice and…

A: Given: The mass of the boat is 20 kg. The inial velocity of the boat is 4 m/s in the horizontal…

Q: Push comes to climb. A bullet with mass m 80.0 [g] and moving at velocity v = 840. [m/s] hits a…

A: Given data: The mass of bullet is m=80.0 g. The velocity of bullet is v=840 m/s. The mass of block…

Q: A 12 kg box sliding on a horizontal floor has an initial speed of 4.0 m/s.  The coefficient of…

A: Apply work energy theorem

Q: The fisherman's mass is 70 kg, and the rowboat's is 119 kg. The fisherman and rowboat are initially…

A:

Q: A swimmer with a mass of 75 kg dives off a raft with a mass of 500 kg. If the swimmer’s speed is 4…

A:

Q: Two freight trains have a complete inelastic collision at a track crossing. Engine 1 has a mass of…

A:

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”