A 12 kg object accelerates from rest to a speed of 15 m/s in 5.0 s. If this process is repeated for a second trial, but it takes 10s, which statement below is true: a. Both trials required the same power to complete the task b. The first trial required less power c. Both trials did the same amount of work d. The second trial did less work e. Two of the above are true f. None of the above are true

Q: In which of the following scenarios is work being done, according to the physics definition?    a.…

A: Let's check each option one by one a Joe solves a “work” calculation in his head According to the…

Q: 6. A child does 350 J of work to lift a box from the ground up to his tree house at a steady speed.…

A:

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: You accelerate from 0-28 m/s in 6.0 seconds (about 0-60 mi/hr) in your 1300 kg car. a. Create a…

A: Given data: The initial speed is, u =0 m/s The final speed is, v =28 m/s The time required to…

Q: In which of the following situations are you doing work on an object ? A. holding a backpack over…

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Q: QUESTION 3 What happens when a net force performs positive work on an object? O a. The object…

A: Work-energy theorem gives us a relation in b/w work & K.E. This theorem states that when at…

Q: A ball is thrown straight up from the ground. The work done on it by the force of gravity is

A: Suppose a body of mass "m" & it is thrown vertically upward.

Q: 38.) if you pushed the bike up a long ramp, you would be doing work as you moved the mass of the…

A: The two situations given are that a bike is pushed up a long ramp and the bike is lifted up a set of…

Q: An 8.0-g bullet has a speed of 730 m/s. a. What is its kinetic energy? KE = J b. What is its kinetic…

A: Given data:  Mass (m) = 8.0 g = 8.0×10-3 kg Speed (v) = 730 m/s Required: The kinetic energy (KE)

Q: 4. In a tug-of-war match, your team is slowly pulling the rope (and the other team) to your side. a.…

A: a. As your team applies a force and there is displacement ( as the other team moves toward your…

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: Select each of the true statements below A. The kinetic energy can be negative. B. If the Moon…

A: A. False The kinetic energy of a body cannot be negative because the mass cannot be negative and the…

Q: Two students take turns attempting to jump and spike a volleyball during practice. Each student…

A: a) Power A​ = 336.875WPower B​ = 327.25W b) Work A​=269.5J Work B​=327.25JStudent B performed more…

Q: Which of these is an example of no work being done?   a. a child pushes a toy car across a flat…

A: Work done is the energy transferred when a force is displaced by a distance.

Q: A person does 400 J of work in 5 sec. Power of the person is calculated tto be ? Choose one correct…

A: Given, Work done by the person W = 400 J Time t = 5 sec We know the expression for power  P=Wt

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

A: Work done(E) in lifting the weight of W = 400 N by h =2.20 m in the opposite direction (Upward) to…

Q: Match each example to the type of work or energy described. a swing travels in the same direction it…

A: Too match the correct options for the given question.

Q: Two people of the same mass climb the same set of stairs. Person A climbs the stairs in 25 s. Person…

A: Let mass of each person = m Weight of each person = mg Time taken by A to climb the set of stairs =…

Q: You lifted 1 kg box from the ground up to the top of a 2 meter long table. Air resistance has…

A:

Q: 11. What happens to the kinetic energy of a moving object if the net work done is positive? c. The…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: There are 2 cars. Assuming the first car has a mass of 1000 Kg, which has greater kinetic energy? a.…

A: given: mass of first car =1000 kg

Q: 5. Joseph sweeps his sidewalk with a broom. Joseph performs 42 Joules of work pushing dead leaves…

A:

Q: How much work was done

A: we know work done W = power * time  W = P * t