7 An object initially at rest accelerates uniformly in a straight line at 5.0 meters per second2, until it attains a speed of 30. meters per second. What is the total distance the object moves while accelerating? (1) 180 m (2) 150 m (3) 3.0 m (4) 90. m

7 An object initially at rest accelerates uniformly in a straight line at 5.0 meters per second2, until it attains a speed of 30. meters per second. What is the total distance the object moves while accelerating? (1) 180 m (2) 150 m (3) 3.0 m (4) 90. m

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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9. A speedboat increases its speed uniformly from 20.0-m/s to 30.0-m/s in a distance of 200-m. Find (a) the magnitude of its acceleration and (b) the time it takes the boat to travel the 200-m distance. Answers: (a) 1.25 m/s? (b) 8.00 s
A powerful motorcycle can accelerate from rest to 28.8 m/s (64 mi/h) in only 4.90 s. (For each answer, enter a number.) (a) What is its average acceleration in m/s2? m/s2
7. A particle is moving in a straight line such that the relation below gives its position. Calculate (a) its = average acceleration during the time interval from t₁ acceleration as a function of time. 7.00 s, and (b) its instantaneous 4.00 s to te = x = (6.3 m/s²)² + (4.9 m)
3. A bee flies in a straight line (a "beeline" as they say). The initial speed of the bee is Vo = 100 cm/s. The acceleration of the bee versus position is given by the graph below. a [cm/s²] 500 0 -250 50 105 145 195 s [cm] a. At what position will the speed of the bee be maximum? Hint: it will be one of the labeled points: 0cm, 50cm, 105cm, 145cm or 195cm. b. What is the speed of the bee at that location? C. What is the speed of the bee after traveling the full 195cm? Hints: you don't need to figure the equations for the four lines to do the integrals, and be careful of the signs.
1.) An acceleration of 90.0 m/s^2 was experienced by a rocket which was launched upward. The acceleration stopped after 10.0 seconds when it run out of fuel . What is the highest speed (m/s) that the rocket experienced?
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A box has a mass of 2.50 kg is at rest on a horizontal frictionless surface. Four forces act on the box. The four forces are: F₁ = 20.0 N (North), F₂ = 30.0 N (East), F3 = 15.0 N (South), and F4 = 40.0 N (West). What is the resulting acceleration of the box? Select one: a. b. C. d. 4.47 m/² @ 26.6° (North of West) 31.3 m/2 @ 26.6° (West of North) 31.3 m/2 @ 26.6° (North of West) 4.47 m/2 @ 26.6° (West of North)
Q2/ Two cars A and B are traveling in adjacent highway lanes, at t=0 the speeds of each car is 18 mi/h, 12 mi/h respectively. Knowing that that A has a constant deceleration of 0.6 ft/s2 and B has a constant acceleration of 0.9 ft/s2, if L=37.5 ft a) When and where A will overtake B 16 s, 385 ft 15 s, 366 ft 18 s, 366 ft 13.5 s, 330 ft 17 s, 374 ft 14 s, 350 ft Other: Q2/b/) The speed of car B at that time is * 35.2 ft/s 31.1 ft/s 32.2 ft/s 34.5 ft/s 33.2 ft/s C C Other: 36.5 ft/s Q2/C) The speed of car A at this time is * 13.5 ft/s C 16.5 ft/s C C C 14.4 ft/s 19.7 ft/s 17.4 ft/s 18.3 ft/s Other:
3) It is a velocity-time graph for an object under constant acceleration. Determine the displacement of the object over the interval 0 s to 3.0 s, 3.0 s to 5.0 s, 5.0 s to 7.0 s. Determine the total displacement. Determine the accelerations of object over the interval 0 s to 3.0 s, 3.0 s to 5.0 s, 5.0 s to 7.0 s. What is the average velocity during the interval 0 s to 4.0 s? Draw the graphs of position-time if its initial position be zero. Draw the graphs of Acceleration-time. v (m/s [E]) 1.2 1.0 0.8 0.6 0.4 0.2 0+ 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 t(s)
1. The cheetah can reach a top speed of 114 km/h. while chasing its prey in a short sprint, a cheetah starts from rests and runs 45 min in a straight line, reaching a final speed of 72 km/h. a. Determine the cheetah's average acceleration during the short sprint, and b. Find its displacement at t= 3.5 s O 4.4m/s2, 27m O 5.6m/s2, 56m O 1.2m/s2, 15m
5. Kathy tests her new sports car by racing with Stan. Both start from rest, but Kathyleaves the starting line 1.00 s after Stan does. Stan moves with a constant acceleration of 3.50m/s2, while Kathy maintains an acceleration of 4.90 m/s2.(a.) Find the time at which Kathy overtakes Stan.(b.) Find the distance Kathy travels before she catches him.(c.} Find the speeds of both cars at the instant Kathy overtakes Stan.
3. If a flea can jump straight up to a height of 0.440 m, (a) What is its initial speed as it leaves the ground? (b) How long is it in the air?