A bullet has a mass of 2.7 g and a muzzle velocity of 1150 ft/s. If fired horizontally, it can penetrate eight 1-inch pine boards before coming to a stop. Each pine board has a thickness 0.8 inches. What is the average stopping force exerted by the wood? a) 10953N                             b) 1018 N                          c) 279 N

Q: A father (mF = 90 kg) and his daughter (mD= 42 kg) stand on a flat frozen lake of negligible…

A: Given data: Mass of father (mf ) = 90 kg Mass of daughter (md ) = 42 kg In the given problem,  there…

Q: a 1040 kg car and 3360 kg truck collide perfectly inelastically. before the collision, the car…

A:

Q: 1. During a snowball fight, a 0.15-kilogram snowball traveling at a speed of 11.0 m/s hits a student…

A: From the definition of impulse, the average force is,

Q: A 1080 kg sports car is moving westbound at 15.O m/s on a level road when it collides with a 6620 kg…

A: Given values: mA=1080 kgmB=6620 kgv→A1=-15 m/sv→A2=10 m/s

Q: 1. A 10-kg rock and a 20-kg rock are thrown upward with the same initial velocity and experience no…

A: When a rock is thrown upwards with initial velocity v and no air resistance is present, then there…

Q: 8. A hockey player shoots a puck at a speed of 150 km/h. The mass of the puck is 0.16 kg, and the…

A: Given data: The mass of puck is m=0.16 kg. The speed of puck is v=150 km/h×1000 m1 km×1 h3600…

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: 49.0-kg person, running horizontally with a velocity of +2.82 m/s, jumps onto a 15.6-kg sled that is…

A:

Q: In the physics lab, a block of mass M slides down a frictionless incline from a height of 35cm. At…

A:

Q: 2. A 45-g golf ball is hit with a force of 5300 N. The time interval of interaction between the golf…

A:

Q: 12. A golfer drives a ball from its tee. The speed of the ball is 30 ms-1. The mass of the ball is…

A: Given: The speed of the ball is v=30 m/s. The mass of the ball is m=50 g. The contact time between…

Q: A pitcher throws a 0.145 kg baseball with a speed of 38.0 m/s. The ball is hit straight back at the…

A: Given mass of ball = 0.145 kg speed of ball before collision = 38.0 m/s spped of ball after…

Q: A 0.900 kg hammer is moving horizontally at 4.50 m/s when it strikes a nail and comes to rest after…

A:

Q: 2. A bullet of mass 0.04 kg moving at 90 m/s speed strikes a heavy wooden block and travels inside…

A:

Q: A 6.693E+3-kg truck moving east at 10.3 m/s collides with a 1.742E+3-kg car moving west at 31.0 m/s.…

A:

Q: During a collision with a wall, the velocity of a 0.200 kg ball changes from 12 m/s toward the wall…

A: Mass of ball = m = 0.200 kg Speed of the ball before striking the wall = u = 12 m/s Speed of the…

Q: A 0.700 kg hammer is moving horizontally at 6.50 m/s when it strikes a nail and comes to rest after…

A: Given  Mass m = 0.7 kg  Initial velocity u = 6.5 m/s  Final velocity v = 0  Displacement s = 1 cm =…

Q: The mass of a rocket when filled with fuel is 2M1 and completely unfueled is M1. The rocket ejects…

A:

Q: A hungry 181 kg lion running northward at 78.2 km/hr attacks and holds onto a 38.0 kg Thomson's…

A: Lion's weight =181 kg Lion's speed=78.2 km/hr =21.72 m/s in north direction Gazelle weight =30 kg…

Q: A 0.650 kg hammer is moving horizontally at 8.50 m/s when it strikes a nail and comes to rest after…

A: Weight of the hammer , m = 0.650 kg Horizontal velocity , v = 8.50 m/s  x = 1.00 cm= 0.01 m To find…

Q: What is the acceleration of a 4700 kg rocket taking off from the moon, where the acceleration of…

A: Given data: Mass (m) = 4700 kg Acceleration of gravity (g) = 1.6 m/s2 Mass flow rate (dm/dt) = 8.00…

Q: A 5.75 x 10-kg rocket takes off from the moon where the acceleration due to gravity is 1.60 m/s2 by…

A: Given, mr=5.75×103 kgv=2.20×103 m/sdmdt=5 kg/sg=1.6 m/s2

Q: A 2,200 kg car moving westward with a velocity of 22 m/s collides with a tree and is brought to rest…

A:

Q: A 0.300 kg toy car moving with a speed of 0.820 m/s collides with a wall. The figure shows the force…

A: Given,mass of the toy car, m = 0.300 kgspeed, u = 0.820 mshead on collision with the wall.

Q: A 0.15 kg baseball is moving at 35 m/s toward home plate when it is hit with the bat. The ball is in…

A:

Q: 3. What will happen after collision of Boat X loaded with a total mass greater that of Boat Y which…

A:

Q: Three cars of equal mass and velocities are traveling south down 41 through Acworth. When they each…

A: Given Data: Masses of car are equal i.e. m1=m2=m3=m Velocities of the car are equal i.e. u1=u2=u3=u…

Q: While playing basketball in PE class, Logan lost his balance after making a lay-up and colliding…

A: Given:  (a) m = 74 kg  u = 7.6 m/s  v = 0 m/s t = 0.16 s  (b)  t = 0.0080 s

Q: A 57 kg factory worker takes a ride on a large, freely rolling 27 kg cart. The worker initially…

A: according to conservation of momentum ,  initial momentum = final momentum  we know momentum P =…

Q: A 70.9 kg boy and a 43.2 kg girl, both wearing skates face each other at rest on a skating rink. The…

A: Given data The mass of the boy is mb = 70.9 kg. The mass of the girl is mg = 43.2 kg. The velocity…

Q: 1. A 2.50-kilogram mud ball drops from rest at a height of 13.0 m. If the impact between the ball…

A: Force is defined as the rate of change of momentum. To solve the question we need to know the…

Q: A 2500 kg Toyota car traveled 20 meters and then stopped to fill up the car with gasoline. Initial…

A: Given Data: The mass of the Toyota car is: m=2500 kg The distance travelled before stoping is: d=20…

Q: A 0.140-kg baseball is dropped from rest. It has a speed of 1.20 m/s just before it hits the ground,…

A:

Q: 3. Two gliders 500 g and is m a velocit an y of -5 glider B move

A:

Q: A catcher in a baseball game stops a pitched ball originally moving at 49.0 m/s49.0 m/s in the…

A: Given:inital velocity, u=49 m/sfinal velocity, v = 0 m/sdistance, s = 10.5 cm = 10.5×10-2 mmass, m =…

Q: A 0.550 kg hammer is moving horizontally at 8.50 m/s when it strikes a nail and comes to rest after…

A:

Q: Suppose a 1.25-kg ball is thrown against a wall at a speed of 15 m/s. After it hits the wall, the…

A: Write the given values with the suitable variables. m=1.25 kgu=15 m/sv=-7.5 m/st=0.000100 s Here, m,…

Q: 2. A 1.80-kilogram mud ball drops from rest at a height of 10.0 m. If the impact between the ball…

A:

Q: Nick plays middle linebacker for South's varsity football team. In a game against cross-town rival…

A:

Q: 1. A blue shooter marble (mass = .85 kg) collides with a pink marble (mass = .70 kg). The blue…

A:

Q: A 380.0 g  volleyball approaches a player horizontally with a speed of 15.0 m/s.         The player…

A:

Q: A 0.650 kg hammer is moving horizontally at 7.50 m/s when it strikes a nail and comes to rest after…

A:

Q: A 750 kg car is stalled on an icy road during a snowstorm. A 1000 kg car traveling eastbound at 12…

A:

Q: A 25-g bullet is fired into a 16-kg wooden block. If the bullet remains embedded in the block, and…

A: Mass of bullet = 25 g  Mass of block = 16 kg  Initial velocity of bullet = u  Combined velocity of…

Q: A 1,000 kg car traveling at 40 m/s collides with a brick wall. The car is in contact with the wall…

A:

Q: At an amusement park there are 200-kg bumper cars A, B, and C that have riders with masses of 40 kg,…

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?”