Two stones are released from rest at a certain height, one after the other. (ign

Question

Two stones are released from rest at a certain height, one after the other. (ignore friction for this problem) a) Will the difference in their speeds increase, decrease, or stay the same? Explain. b) Will their separation distance increase, decrease, or stay the same? Explain. c) Will the time interval between the instants at which they hit the ground be smaller 1) than, equal to, or larger than the time interval between the instants of their release? 2) A person starts running with a constant velocity, trying to catch a streetcar. The streetcar begins to accelerate away from the person when the person is still 20.0m away. Given that the streetcar's acceleration is 0.9 m/s and that the person catches the streetcar, answer the following questions a) How long did the person have to run, after the streetcar began accelerating? b) How far did the person have to run to catch the streetcar? c) How fast was the person running? d) How fast was the streetcar moving when the person caught up to it? A decorative snowman with mass m = 15kg slides down a roof that is inclined at an angle of 30° from the horizontal. The snowman slides a distance of 6.0m down the roof and off the edge, located 8.0m above the ground. The coefficient of kinetic friction for the roof is 0.20. What is the horizontal distance from the edge of the roof to the point where the snowman hits the ground? 3) 4) Two blocks sitting on a frictionless table are pushed from the left by a horizontal force, as shown. The masses of the two blocks are mi = 8kg and m2 = 6kg and the applied force, Fapp 1ON. a) Draw a free body diagram for each block b) What is the acceleration of the blocks? c) What is the magnitude and direction of the force by mi on m2? d) What is the magnitude and direction of the force by m2 on m? F. app mi m2

Explanation / Answer

Problem 1)

a. Since from Newton's first equation of motion, v = a x t, so difference in speed will remain same.

b. Since from Newton's second equation of motion, s = 0.5 x a x t2, so their separation distance will increase.

c. Time interval between the instants they hit the ground will be same as that at the time of their release.

Feel free to ask any query regarding given solution.

According to Chegg guidelines I can answer one question at a time, so please post other questions separately. Please rate my answer if you find it helpful, good luck...

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.