2) A block moves to the right in the +x direction through the displacement while

Question

2) A block moves to the right in the +x direction through the displacement while under the influence of a force with the magnitude F. Rank the following based on the amount of work done by the force F, from most positive to most negative?

3) Three identical balls are thrown from the top of a building, all with the same initial speed and distance above the ground. The first ball is thrown horiztonally, the second at some angle above the horizontal. and the thrid at some angle below the horizontal. Neglecting air restiance, rank the speeds of

a)each ball as it eraches the ground from faster to slowest.

b)Each ball at the moment the first ball touches the ground.

4) a 35.0 N force is applied horizontally to a 0.280 kg box which starts at rest on a frictionless level floor. Using energy principles, find the speed of the box after it has gone 10 fathoms. (Hint do NOT find the acceleration of the box)

**Please show how you got all answers. Thank you! I need help understanding this.

1) A8 kg ball is traveling east at 60 m/s. What is the ball's kinetic energy? 2) A block rmoves to the right() in the +x direction through the displacement x while under the influence of a force with the magnitude F. Rank the following based on the amount of work done by the force F, from most positive to most negative? Justify the answer. a) Force is up (b) force is to the leftc force is to the right d force is left and up 3) Three identical balls are thrown from the top of a building, all with the same initial speed and distance above the ground. The first ball is thrown horizontally, the second at some angle above the horizontal, and the third at some angle below the horizontal. Neglecting air resistance, rank the speeds of a) each ball as it eraches the ground, from fastest to slowest. Justify the answer. b) Each ball at the moment the first ball touches the ground. Justify the answer A 35.0 N force is applied horizontally to a 0.280 kg box which starts at rest on a frictionless level floor. Using energy principles, find the speed of the box after it has gone 10 fathoms. (Hint: Do NOT find the acceleration of the box.) 4)

Explanation / Answer

ACCORDING TO THE CHEGG GUIDELINES I AM ALLOWED TO ANSWER ONLY (FIRST ) ONE QUESTION AT A TIME.

1) According to the provided question we need to find the value of kinetic energy in joules.

KE = 1/2 * m * v^2 = 0.5 * 8.00 kg * ( 60.0 m/s ) ^2 = 14400 Joule =======================ANSWER)

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