IPA cheetah can accelerate from rest to 25.0 m/s in 6.22 s. 12.5 m/s O greater than 12.5 m/s O less than 12.5 m/s Submit Previous Answers v Correct Part C What is the cheetah's average speed for the first 3.11 s of its sprint? For the second 3.11 s of its sprint? Enter your answers numerically separated by a comma. VO AE Vav 1. Vav 2 = 18 m/s Submit Previous Answers Request Answer Part D Calculate the distance covered by the cheetah in the first 3.11 s and the second 3.11 s. Enter your answers numerically separated by a comma. ? di , dz = 58.32 Submit Previous Answers Request Answer

IPA cheetah can accelerate from rest to 25.0 m/s in 6.22 s. 12.5 m/s O greater than 12.5 m/s O less than 12.5 m/s Submit Previous Answers v Correct Part C What is the cheetah's average speed for the first 3.11 s of its sprint? For the second 3.11 s of its sprint? Enter your answers numerically separated by a comma. VO AE Vav 1. Vav 2 = 18 m/s Submit Previous Answers Request Answer Part D Calculate the distance covered by the cheetah in the first 3.11 s and the second 3.11 s. Enter your answers numerically separated by a comma. ? di , dz = 58.32 Submit Previous Answers Request Answer

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 2.73AP: Kathy tests her new sports car by racing with Sian, an experienced racer. Both start from rest, but...

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Plz , do not give the hand written solution for the question . I want typed answer . If the ball moving in a horizontal plane with the initial velocity of 2.5 m/ s and a ball moving with a constant acceleration a= 10 m/s . Find the final velocity of the object At a the t = 2.5 Sec ?
1. The fastest measured pitched baseballleft the pitcher’s hand at a speed of 45.0 m/s. If the pitcher was incontact with the ball over a distance of 1.50m and produced constantacceleration, (a) what acceleration did he give the ball, and(b) how much time did it take him to pitch it? 2. A small rock is thrown vertically upward with a speed of22.0 m/s from the edge of the roof of a 30.0-m-tall building. Therock doesn’t hit the building on its way back down and lands onthe street below. Ignore air resistance. (a) What is the speed of therock just before it hits the street? (b) How much time elapses fromwhen the rock is thrown until it hits the street?
Question 1: A ball is thrown directly downward with an initial speed of 7.20 m/s, from a height of 29.9 m. After what time interval does it strike the ground? _______________s Question 2: A certain freely falling object, released from rest, requires 1.30 s to travel the last 36.0 m before it hits the ground. (a) Find the velocity of the object when it is 36.0 m above the ground. (Indicate the direction with the sign of your answer. Let the positive direction be upward.) ________m/s(b) Find the total distance the object travels during the fall. ______________m
Bryan Allen pedaled a human-powered aircraft across the English Channel from the cliffs of Dover to Cap Gris-Nez on June 12, 1979. (a) He flew for 169 min at an average velocity of 3.53 m/s in a direction 45° south of east. What was his total displacement? (b) Allen encountered a headwind averaging 2.00 m/s almost precisely in the opposite direction of his motion relative to the Earth. What was his average velocity relative to the air? (c) What was his total displacement relative to the air mass?
PROBLEM A race car starting from rest accelerates at a constant rate of 5.00 m/s2, (a) What is the velocity of the car after it has traveled 1.00 102 ft? (b) How much time has elapsed? (c) Calculate the average velocity two different ways. STRATEGY Weve read the problem, drawn the diagram in Figure 2.16, and chosen a coordinate system (steps 1 and 2). We'd like to find the velocity v after a certain known displacement x. The acceleration a is also known, as is the initial velocity v0 (step 3, labeling, is complete), so the third equation in Table 2.4 looks most useful for solving part (a). Given the velocity, the first equation in Table 2.4 can then be used to find the time in part (b). Part (c) requires substitution into Equations 2.2 and 2.7, respectively. Figure 2.16 (Example 2.4) SOLUTION (a) Convert units of x to SI, using the information in the inside front cover. Write the kinematics equation for v2 (step 4): Solve for v, taking the positive square root because the car moves to the right (step 5): Substitute v0 = 0, a = 5.00 m/s2, and x = 30.5 m: 1.00 102ft = (1.00 102 ft) v2 = v02 + 2a x v = v02+2ax v = v02+2ax = (0)2+2(5.00m/s2)(30.5m)= 17.5 m/s (b) Find the trooper's speed at that time. Substitute the time into the troopers velocity equation: vtrooper = v0 + atrooper t = 0 + (3.00m/s2)(16.9s) = 50.7 m/s Solve Example 2.5, Car Chase, by a graphical method. On the same graph, plot position versus time for the car and the trooper. From the intersection of the two curves, read the time at which the trooper overtakes the car.
A prison walks first al a constant speed of 5.00 m/s along a straight line from point to point and then back along the line from to at a constant speed of 3.00 m/s. (a) What is her average speed over the entire trip? (b) What is her average velocity over the entire trip?
Professional Application: Blood is accelerated from rest to 30.0 cm/s in a distance of 1.80 cm by the left ventricle of the heart. (a) Make a sketch of the situation. (b) List the knowns in this problem. (c) How long does the acceleration take? To solve this part, first identify the unknown, and then discuss how you chose the appropriate equation to solve for it. After choosing the equation, show your steps in solving for the unknown, checking your units. (d) Is the answer reasonable when compared with the time for a heartbeat?
A speedboat travels in a straight line and increases in speed uniformly from i = 20.0 m/s to f = 30.0 m/s in displacement x of 200 m. We wish to find the time interval required for the boat to move through this displacement, (a) Draw a coordinate system for this situation, (b) What analysis model is most appropriate for describing this situation? (c) From the analysis model, what equation is most appropriate for finding the acceleration of the speedboat? (d) Solve the equation selected in part (c) symbolically for the boats acceleration in terms of i, f, and x. (e) Substitute numerical values lo obtain the acceleration numerically. (f) Find the time interval mentioned above.
Kathy tests her new sports car by racing with Sian, an experienced racer. Both start from rest, but Kathy leaves the starting line 1.00 s after Stan does. Stan moves with a constant acceleration of 3.50 m/s2, while Kathy maintains an acceleration of 4.90 m/s2. Find (a) the time at which Kathy overtakes Stan, (b) the distance she travels before she catches him, and (c) the speeds of both cars at the instant Kathy overtakes Stan.
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.0 m/s at ground level. The engines then Fire, and the rocket accelerates upward at 4.00 m/s2 until it reaches an altitude of' 1 000 m. At that point, its engines fail and the rocket goes into free fall, with an acceleration of 9.80 m/s2, (a) For what time interval is the rocket in motion above the ground? (b) What is its maximum altitude? (c) What is its velocity just before it hits the ground? (You will need to consider the motion while the engine is operating and the free-fall motion separately.)
Two cars are moving in the same direction in parallel lanes along a highway. At some instant, the velocity of car A exceeds the velocity of car B. Does that mean that the acceleration of car A is greater than that of car B? Explain.
Is it possible for velocity to be constant while acceleration is not zero? Explain.