Problem 9.80 A 200-g block is released from rest at a height of 25 cm on a frictionless 30 incline. It slides down the incline and then along a frictionless surface until it collides elastically with an 800-g block at rest 1.4 m from the bottom of the incline. See the figure (Figure 1). Part A How much later after the first collision do the two blocks collide again? Express your answer using two significant figures. ΜΕ ΑΣΦ Figure 1 of 1 25 cm 30° 1,4 m t= Submit My Answers Give Up
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- A 75.0 kg ice skater moving at 8.50 m/s crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 4.25 m/s. If the impact time is 0.140 s, what are the magnitudes of the average forces experienced by each skater during the collision? Force experienced by moving skater Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. N Force experienced by stationary skater Suppose the average force a skater can experience without breaking a bone is 4500 N. Does a bone break? Yes NoProblem 9.34 A0.060-kg tennis ball, moving with a speed of 5.8 m/s , has a head-on collision with a 9.5x10-2-kg ball initially moving in the same direction at a speed of 2.7 m/s. Part A Assuming a perfectly elastic collision, determine the speed of each ball after the collision. Enter your answers numerically separated by a comma. Express your answers using two significant figures. Hνα ΑΣφ ? m/s 'tennis ball Vhall= Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining Part B Determine the direction of tennis ball after the collision. The tennis ball moves in the direction of its initial motion. The tennis ball moves in opposite direction. Subm Previous Answers v Correct Part C МacВook ProA 1.6 kg object moving at 1.5 m/s collides elastically with a stationary 1.6 kg object, similar to the situation shown in the figure (Figure 1). Part A How far will the initially stationary object travel along a 37° inclined plane? (Neglect friction.) Express your answer using two significant figures. Figure Ην ΑΣφ Submit Previous Answers Request Answer 2.0 kg 1.0 kg 10 m/s 37° X Incorrect; Try Again; 7 attempts remaining Provide Feedback
- Please asapI don't understand how my professor simplified this equation. Can you break it down for me in detail, showing each step and then explaining why you did what you did?Part A A small, 250 g cart is moving at 1.50 m/s on a frictionless track when it collides with a larger, 5.00 kg cart at rest. After the collision, the small cart recoils at 0.870 m/s. What is the speed of the large cart after the collision? Express your answer with the appropriate units. ? Value Units
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- The parking brake on a 1000 kg Cadillac has failed, and it is rolling slowly, at 1 mph, toward a group of small children. Seeing the situation, you realize you have just enough time to drive your 2000 kg Volkswagen head-on into the Cadillac and save the children. Part A With what speed should you impact the Cadillac to bring it to a halt? Express your answer in miles per hour. V= ΕΙ ΑΣΦ ? mphA small, 150 g cart is moving at 1.70 m/s on a frictionless track when it collides with a larger, 5.00 kg cart at rest. After the collision, the small cart recoils at 0.890 m/s. Part A What is the speed of the large cart after the collision? Express your answer with the appropriate units. V= 00 Submit μA Value Request Answer Units ?Need help checking a practice problem. Image attached, thanks!