. Can something have energy without having momentum? Explain. Can something have momentum without having energy? Defend your answer. 2. An inefficient machine is said to “waste energy.” Does this mean that energy is actually lost? Explain..

Q: A 75 kg runner has a speed of 5.45 m/s. What is the runner's kinetic energy?

A: Mass of the person is m=75 kg Speed of the person is v=5.45 m/s Note: 1 N=1 kg·m/s2 1 J=1 Nm 1…

Q: in Q3. A 7kg bowling ball moves at 3m/s. How fast must a 2.45g Ping-Pong ball moves so that thecwo…

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Q: How much work do the breaks on a 3200 kg car need to do in order to slow it from 30 m/s to 20 m/s?

A: Given mass m=3200Kg V1=30m/s V2 = 20m/s According to work energy theorem work done by the car is…

Q: An 80 kg object is dropped from rest from a height of  25 meters above the ground. Use the concept…

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Q: 1.If an object is on the ground, then it does not have any kinetic energy. 2. More massive objects…

A: Dear student, Since you have posted multiple true/false type question. As per company guidelines we…

Q: One of the largest waterfalls in the world, the Iguazu Falls, are located on the border of Argentina…

A: Given: Mass of the log (M) = 1350 kg Velocity of the log before the fall (u) = 7 m/s Velocity of the…

Q: When Skylab reentered the Earth's atmosphere on July 11, 1979, it broke into a myriad of pieces. One…

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Q: 1. What does it mean for a physical quantity to be conserved? Give an ex- ample of something that is…

A: A physical quantity to be conserved means that physical quantity doesn't change over time in an…

Q: A 0.2 kg bullet is fired at a speed of 350 m/s. a.) How much kinetic energy does the bullet possess?…

A: Given: Mass of bullet, m=0.2 kg Speed of bullet, v=350 m/s   To determine: (a) kinetic energy  (b)…

Q: A 4000 gram object has a kinetic energy of 50 Joules. What is the speed of the object?     A. 5…

A: Given Data:- Mass of the object is  m=4000 g    =4000 g×1 kg1000 g    =4 kg Kinetic energy of the…

Q: 5-kg mass mass is projected straight up with a speed of 15 m/s. a. To what height does the mass…

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Q: What is Power? Power can Power has many different be used to refer to a source of plant. If a girl…

A: Power has many different forms and types. Power can be used to refer to a source…

Q: 4. A 4.0 kg object has a velocity of 3i m/s at one instant. Eight seconds later, its velocity is (8i…

A: Mass of the object m=4 kg, initial velocity of the object u→=3i^ m/s and final velocity of the…

Q: 7. Write a statement that describes the impact on kinetic energy of increasing the speed of an…

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Q: 15. A car is traveling to the right at 20 m/s, which gives it a kinetic energy, K. A second…

A:

Q: A lady is riding her bike w/ speed of 5m/s. If the kinetic energy of the lady and her bike is 550J,…

A: Given data :  Velocity (v) = 5 m/s Kinetic Energy (KE) = 550 J Required:  Combined mass of the lady…

Q: solve the following. Provide 1. Given 2. Required 3. Equation 4. Solution 5. Answer

A: Solution:

Q: Grogu is using the "force" to lift the Mandalorian who mass is 88 kg for 2.1 meters in 7 seconds. a.…

A: Given  Mass =88 kg Height=2.1 m Time=7 sec

Q: What is the difference between when work is done by a system and when work is done on a system? a.…

A: Introduction :- Here we need to think about the concept of energy (internal energy) which depends…

Q: force of 30.0 N propels a car weighing 1.5 kg initially at rest for a distance of 2.8 m across a…

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Q: 1.Work energy theorem relation. 2. Change in kinetic energy is equal to work done. 3 .Change in…

A: 1.Work Energy Theorem: Work energy theorem states that work done by all forces or net force ( vector…

Q: The energy stored in a spring is 20 J when it is stretched to 5cm. How much energy is stored when it…

A: Given data: Energy stored in spring (U) = 20 J Stretch in spring (x) = 5 cm New stretch in spring…

Q: A 5-kg mass mass is projected straight up with a speed of 15 m/s. a. To what height does the mass…

A:

Q: 17. A 10.0-kg rocket is fired vertically from Cape Canaveral. Its fuel gives it a kinetic energy of…

A:

Q: 1. A ball is thrown vertically upward until it reaches a height of 5 yards. Find the initial…

A: Given, An object is in motion

Q: 2. You throw a 3 kg ball upwards: it goes up, turns around, and falls back down. At some point…

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Q: A puck, mass 0.20 kg, slides on a horizontal ice rink with a speed of (1.47x10^0) m/s. A hockey…

A: This can be solved using the work-energy theorem. As per the work-energy theorem net work done on an…

Q: A hollow block of mass 3 kg is lifted to a height of 10 m in 3 minutes. a. What is the work done in…

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Q: A 5.00 gram bullet moving horizontally with a speed of 400 m/s collides with a wooden block. After…

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Q: The work that a force does by acting on an object is equal to what? a.) the product of momentum and…

A: When an object is moved by the application of a force on it, then, work is said to be done on the…

Q: 2. There is a bell at the top of a tower that is 45m high. The bell has a mass of 20kg. The bell has…

A: There is a bell at the top of a tower that is 45 m high. The bell has a mass of 20 kg. The bell has…

Q: 1400 kg Polo STi accelerates from rest to 20 m/s in exactly 2 seconds. a. Calculate the change in…

A: Given,Mass of the car, m = 1400 kgcar is start from rest to 20 m/s in exactly 2 sec.hence, the…

Q: A ball weighing 0.2kg rolls along the ground. It has a speed of 3 m/s eventually rolls up a hill.…

A: In the first case, the only energy associated is the kinetic energy of the ball.

Q: I need help with these questions

A: 1) mechanical energy is always conserved with certain conditions. Mechanical energy is combination…

Q: 8). For exercise, an 80 kg athlete climbs 20-m high stairs in 25 s. Assume the efficiency of the…

A: So in this question we are asked to calculate the metabolic energy of the athlete,  the change in…

Q: Energy can be transferred between objects and it can change forms.   a. Give an example of a…

A:

Q: A 500 g cricket ball is moving with 30 m/s. Estimate the speed of a 150g tennis ball to nave the…

A:

Q: A 1.0 kg cart is sliding to the right on a frictionless surface with speed 2 m/s. It collides…

A:

Q: 9. Consider a 59kg volleyball player who is jumping to spike the ball. Her O position is the bottom…

A:

Q: A 1.50 kg model train initially traveling at 0.50 m/s acceler- ates to 1.00 m/s in 10. s. a. What is…

A: Given data: Mass (m) = 1.50 kg Initial velocity (v0) = 0.50 m/s Final velocity (v) = 1.00 m/s Time…

Q: When a stone is dropped from a bridge to a river below, what happens to the gravitational potential…

A: From the law of conservation of energy, one form of energy is converted into another form of energy.…