Grace ran 18.084 km in 1.000 h, a world record time. If her kinetic energy was 694 J, what was her mass?

Q: A proton (mass m = 1.67 x 10-27 kg) is being accelerated along a straight line at 1.10 × 1012 m/s²…

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Q: A 4 kg ball falls from height of 23 m. What willbe potential energy of the ball after 0.8 second?…

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Q: A 4 kg ball falls from height of 23 m. What willbe potential energy of the ball after 0.8 second?…

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Q: how much potential energy does a person of mass 52kg have if they are standing at the top of a…

A: Given Data: The mass of a person is, m=52 kg The height of a building is, h=58 m   The expression…

Q: If an object with a mass of 2 kg changes it speed from 3.12 m/s to 7.96 m/s, what is its change in…

A: Given data: Mass of the object: Initial speed: Final speed: Concept: The change in kinetic energy…

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: Starting from rest, a ball of mass 4 kg is accelerated at 5 m/s2 for 11 s. What is the final kinetic…

A: Given Data, Mass of the ball (m)=4 kg Acceleration (a)= 5 m/s2 Time (t)=11 s

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: An athlete with a mass of 63.5 kg is in a cross country race, and at one instant he has a speed of…

A: Write down the values using a suitable variable. Here. m signifies athlete mass and v signifies the…

Q: For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at…

A: Given data:  Weight (mg) = 400 N Height (h) = 2.20 Time (t) = 1.60 s Required: The metabolic energy…

Q: What is the speed of a car that has a mass of 985 kg and a kinetic energy of 56 000 J?

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Q: An object with a mass of 2.1 kg is initially moving at a rate of 5.73 m/s. A net work of 37.8 J is…

A: Mass of the object, m=2.1 kg   The initial speed, u=5.73 m/s   The net work, W=37.8 J

Q: The velocity of a 1.6kg particle changes from 3i-6j m/s to -6i+3j m/s. What is the change in kinetic…

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Q: A 50kg student traveling in a car with a constant velocity has a kinetic energy of 1.2 × 10^4J .What…

A: Given information: The mass of the student (m) = 50 kg The kinetic energy of the student (K.E) = 1.2…