You demonstrate hitting a board in a karate class. The speed of your hand as it hits the thick board is 14 m/s with respect to the board, and the mass of your hand is about 0.70 kg. A. How deep does your hand go into the board before stopping if the collision lasts for 0.002 seconds? B. Determine the average acceleration required to stop the hand.

Q: A newborn baby’s brain grows rapidly. In fact,it has been found to increase in mass by about 1.6 mg…

A:

Q: Two lovers are parked 10 m from the edge of a cliff in a sports car with mass, including that of the…

A: Given that Mass of the car is M = 1000 kg Mass of the rock is m = 50 kg Distance of the car from the…

Q: A 200 kg car is slowed down uniformly from 20 m/s to 5 m/s in 4 sec. a. What average force acted on…

A: Given : Mass of a car (m) = 200 kg Initial speed (vo) = 20 m/s Final speed (v) = 5 m/s Time (∆t) = 4…

Q: (a) As you approach a stoplight, you apply the brakes and bringyour car to rest. What happened to…

A: a ) As we approach a stoplight, we apply the brakes and bring the car to rest. At that time the…

Q: Part A A7600-kg railroad car travels alone on a level frictionless track with a constant speed of…

A:

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Q: A 2.5 kg block of wood sits on a frictionless table. A 3.0 g bullet, fired horizontally at a speed…

A: Using conservation of momentum, mbuubu=mbuvbu+mblvbl

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A: According to Newton's second law Force applied on a object is equal to rate of change of momentum.

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A:

Q: Two objects collide with each other. One object, mi, has a mass of 2.5 kg, while the other object,…

A: By applying Newton's third law:- m1a1=m2a22.5×0.80=5×a2a2=0.40 m/s2   Hence, the required…

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A:

Q: In the figure, block A (mass 1.4 kg) slides into block B (mass 2.6 kg), along a frictionless…

A: Ma = 1.4 kg  Mb = 2.6 kg  (Va)i = 5.5 m/s  (Vb)i = 2.7 m/s  (Vb)f = 4.8 m/s  Let the final velocity…

Q: For testing, a jetski coming in at 34.1 m/s collides with a tree and stops in around 1 second. A…

A:

Q: 3. a) What is the Impulse-Momentum theorem? b) Show the connection between the Impulse- Momentum…

A: Impulse momentum Theorem is the second name of newton's 2nd law .

Q: A .22 rifle bullet, traveling at 350 m/s, strikes a large tree, which penetrates to a depth of 0.130…

A: Given value--- initial speed = 350 m/s. distance = 0.13 m. mass = 1.80 g. final speed = 0 m/s. We…

Q: A 7.00 g bullet is fired horizontally into a 1.20 kg wooden block resting on a horizontal surface.…

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Q: A 45.0-kg girl is standing on a 135-kg plank. The plank, originally at rest, is free to slide on a…

A: As there is no external force on the system, the total momentum of the system is conserved.   The…

Q: b. The pinata is initially at rest when Luke's friend hit it with a 3 kg bat. Find the velocity of…

A: We will solve the given question using the conservation of momentum. Momentum= mass x velocity

Q: A 45.0 - kg girl is standing on a 150. - kg plank. The plank, originallyat rest, is free to slide on…

A: Part A:

Q: 1. that is initially moving to the left with a speed of 1.55 m/s. After the collision, the 800 g…

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Q: A driver in a 1000 kg car traveling at 24 m/s slams on the breaks and skids to a stop. The…

A: The velocity of car is 24 m/s since it stops the final velocity is 0 m/s. (a) The force acting on…

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Q: You are in a toob floating down the Guadalupe River. The river is flowing with 2 m/s. Your friend,…

A: Given Vx = V river = 2m/sec. Vy = V cooler = .5m/s   Y = 1m Time taken for cooler to reach t =…

Q: 11. initial velocity: iii. acceleration: b) At what time is the mass stopped? c) What is the average…

A: #4 Given data: The constant velocity is v=-20 m/s. The time taken is t=7 s.

Q: What force is required to slow a 1250-kg car traveling 115 km/h to 30.0 km/h within 3.50 s? (a) How…

A: Given data The mass of the car is: m = 1250 kg The initial speed of the car is: u = 115 km/h =…

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Q: A 990-kg sports car collides into the rear end of a 2500-kg SUV stopped at a red light. The bumpers…

A: Given The mass of sports car is m = 990 kg. The mass of the SUV is M = 2500 kg. The distance up to…

Q: A lunar lander in powered descent at 100 m above the surface of the moon slows down from a velocity…

A: Given data The initial velocity of the lunar lander is: u = 20 m/s The final velocity of the lunar…

Q: Enter an expression for the speed of the block/bullet system immediately after the collision in…

A:

Q: A 45.0 kg girl is standing on a 137 kg plank. The plank, originally at rest, is free to slide on a…

A: Given data The mass of the girl is: mg = 45 kg. The mass of the plank is mp = 137 kg. The initial…

Q: In the following figure, mass 1 slides down the frictionless ramp and undergoes an elastic collision…

A: (a) The first mass is at a height h1 above the position of second mass. Thus the additional…

Q: #56

A: (56) If you push the wooden box with force, the vertical component of the force will keep the box…

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Q: QUESTION 2 b. The pinata is initially at rest when Luke's friend hit it with a 3 kg bat. Find the…

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Q: A 65 kg hunter, standing on frictionless ice, shoots a 30 g bullet at a speed of 700 m/s.  What is…

A: Consider the mass of the hunter be mh, the mass of the bullet be mb, the initial speed of the hunter…

Q: In the figure, block A (mass 1.6 kg) slides into block B (mass 2.7 kg), along a frictionless…

A:

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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…

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Q: Temba is standing in the lunch line 6.4 x 106 m from the center of Earth. Earth’s mass is 6 x 1024…

A: Given that Distance between Temba & center of earth r = 6.4 × 106m Mass of earth ME = 6× 10 24…

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: