Football coaches advise players to block, hit, and tackle with their feet on the ground rather than by leaping through the air. Using the concepts of momentum, work, and energy, explain how a football player can be more effective with his feet on the ground.

Q: A young boy is riding a bicycle that has a total mass (including the kid) of 27.6 kg. The boy is…

A:

Q: Problem 4: During an ice show, a 62.5-kg skater leaps into the air and is caught by an initially…

A: Mass (m1)= 62.5kg.      U1 = 3.8m/s Mass (m2) = 67.5kg.      U2= 0m/s

Q: Work Done by Non-Conservative Forces 13. (Note: Here, the non-conservative force increases the…

A: Given: The mass of the baby rocket is 200 g. The altitude above the launch point is 29 m. The work…

Q: Consider a small car of mass 1080 kg and a large sport utility vehicle (SUV) of mass 3960 kg. The…

A: Mass of small vehicle is Mass of large vehicle is Speed of large vehicle is Both vehicles have the…

Q: Ship 1 has a mass of 6.50 × 104 kg and a ship 2 is twice as massive. Both have engines that generate…

A: Given Mass of ship1 = 6.50 × 104 kg Mass of ship 2 = 2 × 6.50 × 104 kg Engine force of 9.50 × 106…

Q: Two objects, one of mass m and the other of mass 2m, are dropped from the top of a building. When…

A: Given that, the masses of the objects are m1=mm2=2m   Let the height of the building is H   Since at…

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

A:

Q: BONUS** 11. Two trucks with equal mass (3000kg each) collide in a perfectly inelastic collision. One…

A:

Q: Jane is on a tree branch 4.7 m above the ground. She sees Tarzan, about to be eaten by a hungry…

A: Given: Initial height of Jane is hi=4.7 m Mass of Jane is mJ=55 kg Mass of Tarzan is mT=70 kg Find:…

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: lands on a 10.5 cm thick gymnastics mat. The gymnast strikes the back of his head against the mat…

A: Mass of gymnast (m) = 5 kg Initial speed (v) =7.4 m/s

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: During an ice show, a 100.0-kg skater leaps with an initial of 4.00 m/s into the air and is caught…

A: Given data: Mass of first skater, m1=100.0 kg Initial velocity of first skater,u1=4.0 m/s Mass of…

Q: A baseball pitcher sends a fastball toward the batter with a speed of 40 m/s. The batter swings and…

A: Given:-   The mass of the ball is m = 145 g  The speed of the ball is v = 40 m/s  The distance that…

Q: A box with mass 410 g moving on a frictionless surface at an initial speed of 1.5 m/s undergoes an…

A: mass of first box = m1= 410 g initial velocity of first box = V1i= 1.5 m/s final velocity of first…

Q: - Who did more work? Explain

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Q: How much power is needed to lift a 12.5 kg sack of rice from the ground to a height of 1.5 m within…

A: According to guidelines we need to solve only first question kindly repost other questions in the…

Q: If two cars with the same mass are moving with speeds v1 = 20.0 m/s and v2 = 60.0 m/s, the ratio of…

A:

Q: A 1.100 kg block slides down a frictionless inclined plane (height 0.800 m), moves across a rough…

A: mass of first block (m) = 1.1 kg Initial height of first block (h) = 0.800 m work done by friction…

Q: By an explosion, a stationary object is shattered into two pieces: A and B. The kinetic energy of…

A: As the object is at rest before the explosion it has a momentum that is zero. Since no external…

Q: Shey leads South’s varsity softball team in hitting. In a game against New Greer Academy this past…

A:

Q: et fighter planes are launched from an aircraft carrier with the aid of their own engine and a…

A: Thrust, T = 2.30×105 J Distance, d = 90 m Kinetic energy, K = 4.50×107 J Consider work done on the…

Q: 7. Two objects are connected M by a light string passing over a light, frictionless pulley as shown…

A:

Q: A 0.017-kg bullet is fired into a stationary block of wood of mass of 5.5 kg. The relative speed of…

A:

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: A 30-caliber rifle with a mass of 3.14 kg fires a 9.33- g bullet with a speed of 596 m/s with…

A: Given

Q: A billiard player hits a cue ball of mass m=0.170 kg that was initially at rest with the cue stick.…

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: In 1995, Karine Dubouchet of France reached a record speed in downhill skiing. If Dubouchet’s mass…

A: Given, Dubouchet's kinetic energy, E= 9.96*104 J Her mass, m= 51 kg

Q: to solve the problem. Nob Hill is a famous 25% grade hill in San Francisco. A bal starts rolling…

A:

Q: Which of the following has the greatest kinetic energy? O a. A ball thrown at 15 m/s with a mass of…

A: The capacity of a body to do work is called it's energy.The tendency which can cause motion or stop…

Q: A 300 g hockey puck is shot across an ice-covered pond. Before the hockey puck was hit, the puck was…

A: We have to determine the change in energy of punk over time.

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: Car A has a mass of 1000 kg and a speed of 30 m/s. Car B has a mass of 2000 kg and a speed of 15…

A: We know thatK.E=12mV2HereK.E=Kinetic energym=mass of objectV=speed of object

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: Two blocks are free to slide along the frictionless wooden track as shown in the figure. The block…

A: m1 = 5 kg h = 5 m m2 = 10 kg

Q: If object B also has 24 J of kinetic energy, is it moving faster or slower than object A? Find the…

A: Given , Kinetic energy of object A is  24 J  Mass of object A (mA)=  M Mass of object B (mB)= M/4