3. The students in this class performed an experiment to determine the acceleration of a ball due to gravity. Their average results were 9.86 m/s². The actual acceleration due to the gravity is 9.81 m/s?. What is the percent error for this experiment? Use GFS
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- Caleb left home and traveled toward the city A at an average speed of 57.9 km/h. Some time later, Kim left traveling in the opposite direction with an average speed of 46 km/h. After Caleb has traveled for 1.24 hours they were 117 km apart. Find the number of minutes Kim traveled. Round off only on the final answer expressed in three decimal places. PLEASE SHOW YOUR COMPLETE AND CORRECT SOLUTION. ASAP! Thank you.2. You take a three-day hiking. On the first day, you travel 5.0 km heading east. On the second you enjoyed the scenery so much you forgot to take note how far you have walked and in what direction. On the third day, after wandering for 8.5 km and in the direction 37° south of west, you found yourself in the base camp. Determine your displacement during the second day of your trip. Use the scale 1.0 cm = 2.0 km.1. A ball is released from rest and slides down a frictionless incline. The below table summarizes the velocity v(m/s) of the ball, measured along the incline, as a function of time t(s). Using an Excel graph of v vs. t, the magnitude of the measured acceleration (in m/s²) is: t(sec) v(m/s) 0.5 2.09 14.11 1.5 6.32 28.26 2.5 10.37 O 4.142 O 8.284 O 9.80 O 1.70 O 2.071 O 3.40
- After Dan makes a basket, Josephine claims she can find the amount of time the ball was in the air (from the time it leave's Dan's hand to the time it enters the basket). 10 ft Josephine says she can do this by using Dan's equation ( h (t) = - 16t2 +18t + 8) and setting the equation equal to zero. Dan doesn't think Josephine's thinking is correct. Who do you agree with? Explain your reasoning using mathematical evidence. 0/10000 WordA flower vase fell from a four storey building which is about 25 feet. How long does it take for it to hit the ground? From the problem, what is the most appropriate equation to be used? Od= O vf = V v + 2ad O U =-2ad O v =-gtConstant values V = 15 ft/s. W = 87 lb, L = 12.6 in, w = 0.110 in, h = 5.27x105 in.. The absolute magnitude of the deceleration (ft/s²) is: Wrong answers will be downvoted
- HOW 1015 run 3.4 m/s? PROBLEM 3: Calculate the average speeds of object A and object B. Which object has the faster speed? How can you answer this question without doing math? Distance (km) 15 10 5 0 09.00 10.00 Time (hours) 11.00P1Liliana can paddle her kayak 7 miles per hour in still water. It takes her as long to paddle 12 miles upstream as it takes her to travel 16 miles downstream. Determine the speed of the river's current. Enter an equation with the following properties: 1. It uses the variable c to represent the speed of the river's current in miles per hour. 2. It uses the information as it is given above. 3. It can be solved to answer the question. Equation: How fast is the river's current? miles per hour
- Becmid-B71423 ACADENIC) 00 Answer 370.98292 N Flag astion estion velocity (m/sec) vs time (sec) ed out of 8. 13 16 5 55 65 -13 The diagram above shows the velocity(m/s) versus time(s) graph of a man driving a car along a straight line from home to his work. What total distance did he travel in the first 8 seconds? Answer: the can8. DETAILS r = A small stone is kicked from the edge of a cliff. Its x- and y-coordinates as functions of time are given by x = 18.5t and y = 3.96t 4.90t2, where x and y are in meters and t is in seconds. (Do not include units in your answer.) (a) Write a vector expression for the stone's position as a function of time (in m), using the unit vectors î and ĵ. (Give the answer in terms of t.) By taking derivatives, do the following. (b) Obtain the expression for the velocity vector as a function of time (in m/s). (Give the answers in terms of t.) V= a = (c) Obtain the expression for the acceleration vector a as a function of time (in m/s²). m/s² m r = (d) Next, : unit-vect notatic write expressions for velocity is in m/s and the acceleration is in m/s².) V = m/s a m m/s MY NOTES m/s² ASK YOUR TEACHER position, velocity, and the acceleration of the stone at t= 3.18 s. (Assume the position is in m, the1 mile = 1609 m. ! hour = 60 minutes. I minute = 60 seconds. Note: these basic conversion factors will be given to you in exams if needed. Part A-What average speed of the rest of the trip is needed if the car's overall average speed of the entire trip is 51.82 mph ? Keep two digits after the decimal point. Be careful: in general we CAN'T write Aveage speed of entire trip = (1/2) (1st segment speed + 2nd segment speed)