A body has 40 J kinetic energy. What is the speed of body if its mass is 20 kg? A 2 ms 1 B 1 ms 1
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Q: A 7.0 kg bowling ball moves at 2.50 m/s. How fast must a 2.60 g Ping-Pong ball move so that the two…
A: The kinetic energy of the bowling ball is
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Q: A 50.0 kg bicyclist on a 10.0 kg bicycle speeds up from 5.00 m/s to 10.0 m/s. What was the total…
A: Given : m1 = 50 kg m2 = 10 kg vi = 5 m/s vf = 10 m/s
Q: A ball of mass m is moving with velocity v, having a kinetic energy KE,. If the velocity of this…
A: The initial kinetic energy of the ball can be determined as, KE1=12mv12 ......…
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A: The rate of doing work is called power.
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A: Mechanical energy is the energy that is possessed by an object due to its motion or due to its…
Q: object of mass 1kg has a velocity of (i2+j-4)m/s. What is its kinetic energy?
A: Given Mass m = 1 kg Velocity v̅ =( 2î + 4ĵ ) m/s
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A: Given:KE1=400 J when v1=7 m/s Find Out: What is the kinetic energy of the object when it is…
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Q: 10. A person jumped into the ocean from a car which was 320 m above the water's surface. He had a…
A: Given: mass of person, m = 94 kg Initial height of person, h1 = 320 m final height, h2 = 75 m
Q: If an object with a mass of 1.6 kg changes it speed from 4.53 m/s to 8.27 m/s, what is its change in…
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Q: 2. Ryan having mass 60 kg possesses a kinetic energy of 1.3 kJ. What is his speed?
A: Disclaimer - You have asked multiple questions, so as per our guidelines we will answer the first…
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Q: A 55 kg student traveling in a car with a constant velocity has a kinetic energy of 1.6 104 J. What…
A: Write the mass of the student. m=55 kg Write the kinetic energy. KE=1.6×104 J
Q: What is the kinetic energy of a 45 kg teenager running at a speed of 2.1 m/s? O 21.4 J O 94.5 J O…
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Q: An athlete with a mass of 63.0 kg is in a cross country race, and at one instant he has a speed of…
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Q: Suppose you lift a 20 kg box by a height of 1.0 m. a) How much work do you do in lifting the box?…
A: Part-a Given: The height upto which the box is lifted h = 1 m. The mass of the box m = 20 kg.
Q: An object has a kinetic energy of 300 J. The object's mass is tripled, the sıze of the object is…
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Q: A toboggan with three people on it has a total mass of 410kg. How much kinetic energy does it have…
A: Given data: Mass, m=410 kg Velocity, V=9 m/s Our question is to find the Kinetic energy of the…
Q: A crate with mass of 2121 kg is dropped off a building 2222 m above the ground. Assuming a complete…
A: By conservation of mechanical Energy Initial potential energy = final kinetic energy Initial…
Q: The energy required to increase the speed of a certain car from 18 m/s to 23 m/s is 185 kJ. What is…
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Q: what is the speed of a 59.1kg women running with a kinetic energy of 2001 J?
A: The expression for kinetic energy of the object is, KE=12mv2v2=2KEmv=2KEm
Q: A 2 500-kg car is moving at 2.30 m/s. How fast must a 1.5-kg toy car be moving so that the two have…
A: Given Mass of the car m = 2500 kg Speed of the car v = 2.30 m/s Mass of the toy car mt = 1.50 kg
Q: What is the change in kinetic energy of the mass in moving from x = 0 to 10.0 m? If the mass begins…
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Q: A typical baseball has a mass of 0.145 kg. Some pitchers can throw a baseball with a speed of about…
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Q: An object has a kinetic energy of 55 J. The object's speed is now doubled. What is its new kinetic…
A: It is given that,
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- Justin, with a mass of 50 kg, is going down an 8.0-m-high water slide. He starts at rest, and his speed at the bottom is 12 m/s. How much thermal energy is created by friction during his descent? Eth=How do you slove?What is the minimum energy needed to change the speed of a 1680 kg sports utility vehicle from 18.8 m/s to 44.2 m/s?
- A 10.0 gram bullet is fired from a gun and it has 500 J of kinetic Energy. What is the speed of the bullet?A sled, of mass 18.6 kg, is stationary when it starts to slide down an icy hill. The hill is 13.0 m tall. Assuming friction is minimal, what is the speed of the sled at the bottom of the hill? Give your answer in m/s to 1 decimal place.Could you help with questions 2 and 3?
- How much kinetic energy does a student of mass 60. kilograms running at 3.0 meters per second possess? A 180 J 270 J 540 J 8100 JA girl skateboards with a kinetic energy of 2543.2J. If the girl and skateboard have a total mass of 110kg, what is her speed?A car is moving at 10 m/s. a) How fast would the car need to go to double its kinetic energy? b) By what factor does the car’s kinetic energy increase if its speed is doubled to 20 m/s?