An iron ball is accidentally dropped from a crane located on top of a building for 180 m and crashed on a parked car. The mass of the iron ball and car are 300 kg and 2500 kg respectively. With the ignorance of air resistance

Q: CAR A 1. Greater force is needed to stop car because it has higher inertia. 2. Bodies with higher…

A:

Q: Calculate the average force a bumper would have to exert to bring a 1000-kg car torest in 20 cm when…

A: Given data: The mass is m = 1000 kg The initial speed is u = 8 m/s The displacement is h = 0.20 m…

Q: The firing of a bullet by a rifle causes the rifle to recoil backwards. The speed of the rifle's…

A: As per the conservation of momentum, the initial momentum of the system will be equal to the final…

Q: A stone with a mass of 2.40 kg is moving with velocity (6.60î – 2.40j) m/s. (HINT: v² = v · v.)

A:

Q: The nozzle of a fire hose ejects 9 kg/s of water at a speed of 27 m/s. Estimate the recoil force on…

A: Given data: Mass flow rate (m/Δt) = 9 kg/s Change in velocity (Δv) = 27 m/s Required: The recoil…

Q: A glider strikes a 0.075-kg block so that its velocity changes by +35 m/s in 0.070 s. With what…

A: Correct option is (B) i e  average force is 37.5 N .

Q: A wedge of mass M and angle ø slides freely on a horizontal plane and a block of mass m moves freely…

A:

Q: A 5.00 g bullet is shot vertically into a 2.85 kg wooden block. The bullet stays embedded in the…

A:

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: In a Subaru TV commercial, a dog is driving a car of total MASS 1,812 kg.  Suddenly a person runs…

A:

Q: A boy jumps into a stationary boat with a speed of 5 m/s. Right after, the boat along with the boy…

A:

Q: You are with 20 other people on a boat at rest in frictionless water. The group's total mass is 1560…

A: Given that ---  total mass = 1560 kg boat's mass = 1.2×104 kg.  The entire party walks = 6.3 m…

Q: The units of N/kg can be written as: O m/2 т O m² 52 O kg-m/2 O m/s

A:

Q: A pitcher throws a softball toward home plate. When the ball hits the catcher's Mitt, its horizontal…

A: Given: Horizontal initial velocity of ball is vi=32 m/s. Final velocity of ball is vf=0 m/s Time…

Q: The figure shows a boy with a mass of 60 kg jumps out of the boat of mass 200 kg to the jetty. Rajah…

A:

Q: A 51.9-kg skater is standing at rest in front of a wall. By pushing against the wall she propels…

A: The average force exerted on the wall can be given by Favg=mv-ut

Q: Complete the table with the magnitudes of each value. Cart 1 6 kg Cart 2 Mass 3 kg Average Force 10…

A: According to Newton's third law , for every action force there is equal and opposite reaction force…

Q: A crate of mass m = 12.80 kg is pulled by a massless rope up a 36.9° ramp. The rope passes over an…

A: Work done on an object due to a constant force F that displaces it by a distance d is given by W=Fd…

Q: Find the velocity at which a super hero with a mass of 76.0 kg must fly into a train with a mass of…

A:

Q: block of wood provided a decelerating force of -500 N to stop the penetration of a 0.005 kg spear…

A: Given:The deaccelerating force is -500 N. The mass of the spear is 0.005 kg. The initial velocity of…

Q: A sprinter with a mass of 75 kg reaches a speed of 8 m/s during a race. Find the sprinter's linear…

A: The formula for momentum is Momentum= mass × velocity

Q: A 120-kg car starts at rest and accelerates forward, reaching a velocity of 1600 cm/s in 5 s. What…

A:

Q: The man jumps from the window of a burning hotel and lands in a safety net that stops him fall in…

A: The guy enters the net at velocity u=27m/s. the net stops him from falling in 0.5m i.e., the guy…

Q: A block of mass 128 kg lies on a horizontal plane. A horizontal force F of magnitude 1073 N is…

A: Given  Mass of the block is m=128 kg Magnitude of the horizontal force is F=1073 N Distance traveled…

Q: In order to catch a ball, a baseball player moves his or her hand backward in the direction of the…

A: In order to catch a ball, a baseball player moves his or her hand backward in the direction of the…

Q: A bumper car with a mass of 86 kg is traveling at 3.6 m/s. A bumper car with a mass of 98 kg  is…

A:

Q: Car A of mass 2000 kg moving at 72 km/h, east tries to overtake car B of mass 1250 kg moving at 60…

A: Given: The mass of car A is 2000 kg. The speed is 72 km/h. The mass of car B is 1250 kg. The speed…

Q: In the district soccer championship finals, Elizabeth kicks a 0.96 kg soccer ball with a force of…

A: Mass of the soccer ball, m = 0.96 kg Force applied, F = 28.6 N   From Newton's second law of motion,…

Q: An 85 kg man lowers himself to the ground from a height of 10.0 m by holding onto a rope that runs…

A: The net force on the man is

Q: A block having a mass of 0.7 kg is at rest near the edge of a frictionless table 1.1 m high. A…

A:

Q: Two students are watching an action film in which a car drives down a ramp onto the back of a moving…

A:

Q: A tennis player returns a 30.0 m/s serve straight back at 25 m/s, after making contact with the ball…

A: Given data:  Initial velocity = 30.0 m/s Final velocity = 25 m/s, opposite to initial velocity  Time…

Q: A 2500 kg truck traveling at 80 km/h collides with another car of mass 1000 kg traveling at 50 km/h…

A: Since the collision between the vehicles is inelastic on the momentum is conserved that is :…

Q: A body of mass 15 kg moving with velocity of 2 m/s is acted upon by a force of 75 N for two seconds.…

A: Mass (m) = 15 kg initial velocity (u) = 2 m/s Applied force (F) = 75 N Time (t) = 2 seconds

Q: A force of 45 N is applied in the horizontal direction to an object with a mass of 3 kg. Since the…

A:

Q: A ball with a mass of 30.6 kg is thrown toward a wagon which has a mass of 23.0 kg at a speed of…

A:

Q: Batman (mass = 86.5 kg) jumps straight down from a bridge into a boat (mass = 493 kg) in which a…

A: Given: Mass of the batman, m1 = 86.5 kg Initial velocity of the batman, v1 = 0 m/s (because…

Q: A sprinter with a mass of 79 kg reaches a speed of 8 m/s during a race. Find the sprinter's linear…

A: when a body/particle moves on a plane or straight path, amount of motion obtained is called linear…

Q: The padded dashboard was one of the first safety devices included in automobiles. The padded…

A: The force acting on an object is defined as the ratio of change in momentum to the change in time…

Q: Action-reaction forces: CHoices: always act on the same object       always act on two distinct…

A: Force is considered as the push or pull applied on the body. Action force is the force which is…

Q: A 3 kg block sits on a level table and a string runs over the edge of the table on a pulley to a…

A: Free body diagram gives whole idea of the forces acting. Force brings about motion and changes in…

Q: A train pulled by a diesel engine moves down a track at 20.0 m/s. The mass of the diesel engine is…

A:

Q: You have been hired as an expert witness in a court caseinvolving an automobile accident. The…

A: car A of mass 1500 kg  car B of mass 1100 kg coefficient of kinetic friction =0.6 retardation due to…

Q: A car (VW) and a truck (C) collide inelastically (stick together). The impact is made in a very…

A:

Q: Two students are watching an action film in which a car drives down a ramp onto the back of a moving…

A:

Q: Car A of mass 1200 kg moving at 30 m s collides with a car B of mass 1500 kg moving at 20 m s' in…

A:

Q: A trailer truck enters a 2 percent uphill grade traveling at 66 km/h and reaches a speed of 108 km/h…

A: Given: Mass of cab(mcab)=1800 kgWeight of cab(Wcab)=17658 NMass of trailer(mtrailer)=5400 kgWeight…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: