33. Name the appropriate unit for each quantity. iii) Momentum iv) Mechanical Energy
Q: 6- A 45-g dart is traveling at 4.4 m/s. What is the kinetic energy of the dart?
A: Mass of dart(m) = 45g = 0.045 KgSpeed of dart(v) = 4.4 m/sFind - What is the kinetic energy( K.E) of…
Q: Which of the following statements are TRUE? A. Power is a scalar physical quantity. B. Power can be…
A: A - True ( since P=W/t & work is scalar) B - True (since work can be positive, negative &…
Q: Defined as the change in an object's Kinetic Energy a. Mechanical Energy b. Law of Conservation of…
A: According to the law of conservation of energy, energy can neither be created nor destroyed. It can…
Q: The work done in accelerating a body equals the body's change in.. A. Momentum B. Kinetic energy C.…
A: Work done by a force can be represented as, Here, F, d, and θ represent the force, the…
Q: A sled dog can accelerate a 250 kg sled from 0 m/s to 8.5 m/s in 8 s. (8 Points) a. How far will the…
A: (a) Sleg dog has traveled Xf= 34 m in that time. (b) work done W= 9031.25 Joules
Q: 81. Work is a transfer of * a. energy O b. force C. mass O d. motion
A:
Q: 8. The driver of a car steps on the gas, and the car accelerates with acceleration a. When writing…
A: Option 1 The normal force is always acting normal to the object. Which is wrong statement. Option 2…
Q: The statement that change in kinetic energy of a system is equal to the work done on the system by…
A: Concept used: Work done on a system is equal to difference of final and initial kinetic energy of…
Q: In which of the following situations are you doing work on an object ? A. holding a backpack over…
A:
Q: 85. What is work – energy theorem? a. It states that whenever work is done, energy changes. b. It…
A: The amount of work done by all the forces on a particle is equal to the change in kinetic energy.
Q: 16. Which of the following is/are incorrect about the concept of business? I) If the sign of the…
A: We are given 3 statements about work done. The thermodynamics first law is about law of conservation…
Q: Match associated items - A. B. C. D. E.…
A: Terms given in left column : Power Physics unit of energy Physics unit of power Potential energy…
Q: Match each unit with the physics concept it represents. force а. Newtons work b. watt mechanical…
A: Match each unit with the physical concept
Q: the KE of a 1 000 kg . Calculate car travelling at 60 km/h.
A: Given data: Mass (m) = 1000 kg Velocity (v) = 60 km/h Required: Kinetic Energy (KE)
Q: 5. A basket of fruits which is on the top of a 1.5m high table has a PE of 44J. What is the mass of…
A:
Q: 8. Describe an object that has a lot of kinetic energy, but not much speed.
A: The kinetic energy of an object is given as, K=12mv2 Here, m denotes the mass and v denotes the…
Q: 1. Why does defining kinetic energy make calculations easier? 2. You drop a ball from the top of…
A: If an object has mass 'm' and velocity 'v' then the kinetic energy of the object can be found using…
Q: ball is thrown horizontally off of a building with initial speed vo. Describe the graph of kinetic…
A:
Q: 94. Which of the following is a unit of energy?* O a. W O b. kg m/s O c.J O d. m/s
A: Energy : Energy is defined as the capacity of doing work.
Q: If the sizes of the vectors F and E in the figure are 6 and 5 units, what is the scalar product of…
A:
Q: This quantity is defined mathematically as force times distance. Choose the correct letter only.…
A: Quantity mathematically defined as force times distance i.e., Quantity = Force x distance = F d…
Q: 1. Differentiate work, energy and forces and answer some misconceptions about it.
A: Power (PPP) Rate at which work is done (or energy is transferred). SI units of \text {Watts…
Q: When the speed of your car is doubled, by what factor does its kinetic energy increase? a. sqrt of 2…
A:
Q: If the mass of the swimmer is 50 kg. d. Velocity impact is e. Assuming the swimmer falls directly…
A: Given that Height (h)= 15 m Let the velocity of impact be v Mass of the swimmer (m)= 50 kg
Q: The work down in accelerating a body along a frictionless horizontal surface equals the body's…
A: Given data: Body accelerate on the horizontal surface Surface is frictionless Required: Work done
Q: a). Which of the following is NOT a unit of potential energy: a)J, b) kg*m/s^2, C) kg*m^2/s^2, D)…
A: a) unit of potential energy are hence option C is not unit of potential energyb)we know change…
Q: Kinetic energy depends on A. Mass and volume B. Weight and height C. Velocity and weight D.…
A: We know that , Kinetic Energy (K.E) = (1/2)×mass×(velocity)2
Q: 8. The driver of a car steps on the gas, and the car accelerates with acceleration a. When writing…
A: The motion of any object is governed by Newton's three laws of motion. The second law states that…
Q: What is Law of Conservation of Mechanical Energy?
A: As per the work-energy theorem, the work done by a force on a closed system can be given as, Here,…
Q: Which of the following statements are FALSE? A. Power is a scalar physical quantity. B. Power can be…
A: Rate of doing work is known as power . So power (P) = W/t
Q: 5. What is kinetic energy? Select one: a. stored energy b. energy of friction c. energy of motion d.…
A: Kinetic energy: It is the energy possessed by the object due to its motion. When the object having…
Q: f an object has kinetic energy, it must also have A. Potential energy B. Momentum C. Power D. Impuls
A:
Q: 1. Describe the energy transformations that occur when you climb to the top of a stairway.
A: To discuss the energy transformations that occur when climb to the top of a stairway.
Q: What is Law of Conservation of Mechanical Energy?
A: According to conservation of energy Total energy of isolated system remains constant.
Q: 10. The dot product of a, · a, is equal to: а. 1 b. 0 C. C. az d. -1
A:
Q: 10.) What is one effect of friction? a. Mechanical energy is transformed into thermal energy. b.…
A: Effect of friction
Q: 29.) Which of the following best describes the type of energy that is stored in the food you eat?…
A: When we eat food, we get energy to do various activities within the day.
Q: 8. Michaela and Carlee decide to rob the school of the Presentation Night loot on roller skates.…
A: Given data : Mass of the bag (m) = 12kg Mass of michaela (m') = 58kg Initial speed of the bag (v) =…
Q: What are three different units used for work?
A: work done in physics is defined as the dot product of force applied to an object and displacement of…
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