What is the instantaneous velocity of a freely falling object 12 s after it is released from a position of rest? Express your answer to two significant figures and include the appropriate units. HA Value Units

What is the instantaneous velocity of a freely falling object 12 s after it is released from a position of rest? Express your answer to two significant figures and include the appropriate units. HA Value Units

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 67P: Calculate the displacement and velocity at times of (a) 0.500 s, (b) 1.00 s, (c) 1.50 s. (d) 2.00 s,...

See similar textbooks

Similar questions

joe wants to test how fast can superman save him if he jumps of a cliff 180 m high. he recorded that after 5 seconds, superman arrives at the cliff and dives to save joe. superman leaves the cliff with an initial velocity to give him a push to catch joe, and later on act on a free fall as joe is. compute the initial velocity of superman so he can catc joe before they hit the ground.
Planet X was just discovered orbitinga nearby star! It orbits a start that is 6.9 times themass of our sun in a solar system just 31.3 light-years away. The acceleration due to gravity thereis 0.07 g. After making some measurements in lab, you start to daydream about travel to other planets. Your spring gun can launch a projectile with a speed of 3.7 m/s. What would happen if you were tolaunch a projectile at an angle of 32 ° abovehorizontal on Planet X? (a) What maximum height would the projectilereach?(b) How far would the projectile travel before ithit the ground? Assume the projectile lands at the same height it was launched from.
An initially motionless test car is accelerated uniformly to 120 km/h in 8.13 s before striking a simulated deer. The car is in contact with the faux fawn for 0.695 s, after which the car is measured to be traveling at 65.5 km/h. What was the magnitude abefore of the acceleration of the car before the collision? What is the magnitude davg.col of the average acceleration of the car during the collision? What is the magnitude of the average acceleration aavg,test of the car during the entire test, from when the car first begins moving until the collision is over? abefore = davg.col = davg.test = m/s² m/s² m/s²
A dolphin in an aquatic show jumps straight up out of thewater at a velocity of 13.0 m/s. (a) List the knowns in thisproblem. (b) How high does his body rise above the water?To solve this part, first note that the final velocity is now aknown and identify its value. Then identify the unknown, anddiscuss how you chose the appropriate equation to solve forit. After choosing the equation, show your steps in solving forthe unknown, checking units, and discuss whether the answeris reasonable. (c) How long is the dolphin in the air? Neglectany effects due to his size or orientation
Question 8 Jas is calculating a projectile motion problem for a snowball that is thrown horizontally, assuming negligible air resistance. He determines that the final velocity of the snowball after 2 seconds is roughly half if its initial velocity. Does this answer make sense? Why or why not?
Suppose you throw an object from a great height, so that it reaches very nearly terminal velocity by time it hits the ground. By measuring the impact, you determine that this terminal velocity is -49 mi sec.A. Write the equation representing the velocity v(t) of the object at time t seconds given the initial velocity v0 and the fact that acceleration due to gravity 9.8 m/sec2. (Here, assume you're modeling the falling body with the differential equation dy/dt = g-kv, and use the resulting formula or v(t) found in the Tutorial. Of course, you can derive it if you'd like.)B. Determine the value of k, the "continuous percentage growth rate" from the velocity equation, by utilizing the information given concerning the terminal velocity.C. Using the value of k you derived above, at what velocity must the object be thrown upward if you want it to reach its peak height after 3 sec? Approximate your solution to three decimal places, and justify your answer.
While entering a freeway, a car accelerates from rest at a rate of 2.81 m/s² for 13.3s. To help with this question, draw a sketch of the situation and list the knowns in this problem. a) How far does the car travel in those 13.3s? b) What is the car's final velocity? Submit answer Answers (in progress) Answer m m/s (3 4 Score -/0.5 -/0.5 0/1
What is The instantaneous velocity of a free falling object 12 s after it is released from a position of rest . express your answer to 2 significant figures and include the appropriate units ( there is no more information in the question)
A stone is projected vertically upward from the top of a 120 m high tower at a initial velocity of 36 m/s. What is the maximum height that the stone can reach woth respect to the ground? At what time will the stone finally reach the ground?
Jack wants to test how fast can superman save him if he jumps of a cliff 180m high. He recorded that after 5 seconds, superman arrives at the cliff and dives to save Jack. Superman leaves the cliff with an initial velocity to give him a push to catch Jack, and later on act on a free fall as Jack is. Compute the initial velocity of superman so he can catch Jack before they hit the ground.
Hello, I have already asked this question but the previous answer came back wrong when I checked it. A world record was set for the men’s 100-m dash in the 2008 Olympic Games in Beijing by Usain Bolt of Jamaica. Bolt “coasted” across the finish line with a time of 9.69 s. If we assume that Bolt accelerated for 3.00 s to reach his maximum speed, and maintained that speed for the rest of the race, calculate his maximum speed and his acceleration. Previeous answer: Maximum speed=v=8.9 m/smagnitude of acceleration =2.97 m/s2
Joe wants to test how fast can Superman save him if he jumps of a cliff 180m high. He recorded that after 5 seconds, Superman arrives at the cliff and dives to save Joe. Superman leaves the cliff with an initial velocity to give him a push to catch Joe, and later on act on a free fall as Joe is. Compute the initial velocity of Superman so he can catch Joe before they hit the ground.