28. Starting at time t = 0, an object moves along a straight line. Its coordinate in meters is givenby x(t) = 75t – 1.0t³, wheret is in seconds. When it momentarily stops its acceleration is:А. ОВ. —73 m/s?C. -30 m/s?D. -9.8 m/s²E. 9.2 x 103 m/s²ans: C

Given data: Position of object as function of time x(t) = 75t - 1.0t3 t in seconds Required:…

Starting at time t = 0, an object moves along a straight line. Its coordinate in meters is given by æ(t) = 75t – 1.0t³, where t is in seconds. When it momentarily stops its acceleration is: A. 0 B. -73 m/s? C. -30 m/s² D. -9.8 m/s² E. 9.2 x 103 m/s? ans: C

Starting at time t = 0, an object moves along a straight line. Its coordinate in meters is given by æ(t) = 75t – 1.0t³, where t is in seconds. When it momentarily stops its acceleration is: A. 0 B. -73 m/s? C. -30 m/s² D. -9.8 m/s² E. 9.2 x 103 m/s? ans: C

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)...

See similar textbooks

Related questions

Q: 10. A certain car increases its speed uniformly from 22.0 m/s to 37.0 m/s in a distance of 1.99 x…

A: Answer:- Given Initial speed (u) = 22.0 m/s Final speed (v) = 37.0 m/s Distance travelled (S) =…

Q: 1 A car has acceleration of 1.20 m/s2 and starts from 2.50 m/s. What is its speed after 5.00…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: An object is dropped from a tower, 160ft above the ground. The object's height above ground t sec…

Q: 96.75 km + 109.43 km + 77 km = C. d. 10.970 g – 5.0 g = 797.6 inches x 52 = %3D е. f. 797 inches x…

A: Please see the answers below

Q: 5. The height of a football is modelled by the function h(t) = -5² + 15t + 1, where h(t) is the…

A: Given: Height, h(t)=-5t2+15t+1 (1)

Q: In m/s?, what is the acceleration when t = 7.5 sec? Express your answer as an integer, not as a…

A: The acceleration at a time in velocity-time graph represents the at that time.

Q: 22. The following data show the position of an object as a function of time. Position (cm) 0 3 11 26…

Q: A bus travels with a speed of 75 mi/h. This speed in S.I. units is .(Given 1 mile = 1.609 km) O a.…

A: Given :. V = 75 mi/h 1 mi = 1.609 km And 1 km = 1000 m So one mile = 1.609 x 1000 m 1 hr = 60x60 s…

Q: Use the velocity vs. time graph below to find the average acceleration over the entire interval.…

A: Velocity Vs time graph Final velocity is Vf = 2 m/s at Tf = 14 s Initial velocity is Vi = - 3 m/s…

Q: 1. A sprinter at a track and Field event is entered in a 500 m race. The starting gun goes off,…

A: (1) According to the kinematic equation of motion, the acceleration of the sprinter is, Substitute…

Q: A projectile exits a launch tube with a velocity of 255 m/s. While accelerating through the launch…

A: Given,

Q: A car traveling in a straight line path has a velocity of 10m/s at some instant. After 3 seconds…

A: Given: vi=10 m/s vf=6 m/s t=3 sec

Q: 1. A man jogs 5.0 km (5000 m) in 27 minutes. a) What is the time interval (At) in seconds? b)…

Q: A rock is dropped from the top of a building. Rock starts from rest and it takes 7seconds to reach…

Q: 1. A vehicle drives at a constant speed of 215km/h for 42.3 seconds, accelerates by 29.4m/s2 for…

A: As you have posted multiple questions, we will solve the 1st question for you with all subpart. If…

Q: 3. A Tesla can accelerate from 0-60 MPH in 2.8 seconds, yielding an average acceleration of 21.4…

A: 3) Initial velocity (u) = 0 mph Final velocity (v) = 60 mph time taken = 2.8 seconds acceleration =…

Q: For questions 2 & 3, use the following problem: An object moves on a straight line so tha after t…

A: x(t) = t2 - 2t

Concept explainers

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.

Question

28. Starting at time t = 0, an object moves along a straight line. Its coordinate in meters is given
by x(t) = 75t – 1.0t³, wheret is in seconds. When it momentarily stops its acceleration is:
А. О
В. —73 m/s?
C. -30 m/s?
D. -9.8 m/s²
E. 9.2 x 103 m/s²
ans: C

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

I need help on this question?
a. 0.400 m/s2b. 0.555 m/s2c. 0.308 m/s2d. 0.385 m/s2
The S.I. unit of acceleration is meters per second2 Select one: a.True b.false
1. Jack drives a distance of 160 miles at an average speed of 35 miles/hr, followed by a distance of 190 miles at 75 miles/hr. What is his average speed over the 350-mile trip? Hint: Draw a labeled sketch of the trip. V avg miles per hour
A car starts from 2.00 m/s and accelerates at 4.00 m/s2 for 6.0 s, it coasts for 5.00 s, and then slows down at a rate of 2.00 m/s2to a stop. How far has it traveled, in meters? Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
Physics question
A ball is thrown at an initial height of 65 feet at an initial velocity of 75 feet/second at an angle of 65 degrees. Given the parametric equations yY = - - 16t + Vo · Sin(0)t + ho and x = Vo Cos(0)t. When doing calculations, carry 5 digits of accuracy, so your round off does not build up. a. What is the ball's height in 3 seconds? feet. seconds. b. When will the object hit the ground? feet. c. How far horizontally will the ball be when it hits the ground? seconds. d. When will the ball be at its maximum height? e. What is the ball's maximum height? feet. feet f. How far horizontally will the ball be when it reaches its maximum height?
I left my house at 7 AM, drove 1100 km and arrived in South Carolina at 6 PM. My speed at 3 PM was: A. unknown, there's not enough info B. 105 km/h, that's the speed limit C. 77 km/h D. 100 km/h
1. A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction. If she maintains a constant speed of 610 mi/h, how far is she from her starting position?Your answer is mi;Enter your answer rounded to two decimal places. 2. A steep mountain is inclined 74 degree to the horizontal and rises to a height of 3400 ft above the surrounding plain. A cable car is to be installed running to the top of the mountain from a point 880 ft out in the plain from the base of the mountain. Find the shortest length of cable needed.Your answer is ft
A rabbit runs across a parking lot on which a set of coordinate axis has been drawn. The coordinates of the rabbit’s position as a function of time t are given by: x = -0.3t2 + 5t + 28 and y = 0.22t2 - 8t + 30 with t in seconds and x and y in meters. What is the velocity at t= 10 sec? A. 0.6 i + 0.4 j B. -0.2i +1.6j +30 C. -i - 3.6 j D. 4i + 2j
11
If an object is dropped from a 196-foot-high building, its position (in feet above the ground) is given by s(t)= - 16t² + 196, where t is the time in seconds since it was dropped. a. What is its velocity 1 second after being dropped? b. When will it hit the ground? c. What is its velocity upon impact?