12. A car accelerates uniformly at 3,5 m-s- from a speed of 10 m's-' for 5 s along astraight horizontal road.12.1 Define uniform acceleration.12.2 Calculate the velocity of the car at 5 s.12.3 Calculate how far the car travelled in 5 s.(3)(4)(4)13. The driver of a car travelling at 30 m's along a straight road brakes suddenly toa stop to avoid hitting a cow that is standing in the road. It takes him 3 s from thetime he sees the cow to the time when he applies the brakes. These 3 s are calledthe "reaction time". He slows down at a rate of 4 m's-?.13.1 What distance does the car cover during the 3 s of reaction time?13.2 What distance does the car cover during the time when the brakes areapplied?13.3 Draw a neat velocity -time graph of the car's motion from the time thedriver first saw the cow to the time that the car was brought to a stop. Ifnecessary calculate any relevant values which you need to draw this graph. (7)(3)(4)A train travels at a constant velocity of 22 ms along a straight railway tracktowards a level crossing. A mini bus, which is 4,5 m long, is stationary at the levelcrossing. The mini bus driver decides to cross the track. The mini bus is capableof accelerating at 2 m's- and the width of the track is 2,5 m.14.Final position: : Original positionof mini busof mini bus4.5 mTrain22 m-s1141 Calculate the shortest time it takes the mini bus to cross the railway track.14.2 How far away must the train be if the mini bus is to cross the track in(4)front of the train without colliding with it? Assume the train maintains aconstant velocity.(4)96 Grade 10 Physical SclencesG10_Tema_ResourcePack ind 6

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

Answered: 12. A car accelerates uniformly at 3,5…

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

Similar questions

3. You throw a ball straight from a roof top 160 ft high with an initial speed of 48 ft/s. The formula h = -16t2 + 48t + 160 describes the ball"s height above the ground, h in ft, t in seconds after you throw it. a)When will the ball be 192 ft high? b)When will the ball hit the ground? un in the
1. The position and velocity for one-dimensional motion can be derived from the following equations: 1 Xf – Xị = Vịt +,at? 2 Vf = Vị + at Where, x; is the initial position, Xf is the final position, v; is the initial velocity, vf is the final velocity, a is the acceleration, and t is the time. Modify the above equations for the motion of free fall object. [Hints: Definition of free fall object: An object that is falling under the sole influence of gravity is called a free-falling object.]
2. A car initially moving at 20 m/s slows down to a speed of 5 m/s in 5 s. What is its acceleration? How long will take the car to come to a stop?
4. Angel starts to move from point O and travels in a straight line with v=2t cm/s and t is the time in seconds after leaving O. The particle comes to rest at P. Calculate a. The value of t at P b. The acceleration at P c. The distance from O to P 5. A body projected upward from the level ground at an angle of 50° with the horizontal has an initial speed of 4 m/s. (. a. How long will it take to hit the ground? b. How far from the starting point will it strike? c. At what angle with the horizontal will it strike? DYNAMICS 1. What weight W is necessary to start the system of blocks shown in Figure moving to the right? The coefficient of friction is 0.10 and the pulleys are assumed to be frictionless. What are the amount and direction of the frictions (Justify your answer 40 kN 60 kN w 20° 4. The blocks are separated by a solid strut which is attached to the blocks with frictionless pins. If the coefficient of friction for all surfaces is 0.20, a. determine the value of horizontal force P…
How to solve this question
1. A car is travelling towards the start line and the timer starts timing when the car crosses the start line. When the car crosses the start line, it is travelling at 5 m.s1. The car maintains its speed for 3 seconds then speeds up to 8 m.s1 in 4 seconds. It maintains this speed for 1 second then brakes hard and comes to a rest in 3 seconds. 10 9. 8. 7 3 2 1 0. 0 1 2 3 4 7 8 9 10 11 Time (s) a) What is the instantaneous velocity of the car at t = 7 s? b) What is the displacement? c) What is the average velocity of the car for the journey? 5 4- Velocity (m/s)
4. CHALLENGE PROBLEM. John hopes to finish a 10,000-m run in less than 30.0 for him to reach the speed of 60 m/s? Direction: Solve the following problems. Show your complete solutions legibly a slow-moving dump truck. If he can accelerate at 5 m/s?, how long will it take 3. John is driving his sports car down a four-lane highway at 40 m/s. He overtakes 1. A golf ball rolls up a hill toward a miniature golf hole with a speed of 2.0 m/s and consume at an acceleration of 0.20 m/s² in order to achieve the desired time? min. After 27.0 min, there are still 1100 m to go. How many seconds must he Activity 2.11: One Dimensional Uniformly Accelerated Motion Problems 2. An airplane accelerated uniformly from rest at the rate of 5.0 m/s2 South for slows at a constant rate of 0.50 m/s2. What is its velocity after 2.0 s? 14 s. What final velocity did it attain? and concisely in a separate sheet of paper.
1. A ball is thrown straight up in the air. If it is in the air for 3.2 seconds before landing on the starting point, how high did the ball reach? 2. A stone falls freely for 8 seconds. Calculate the stone's velocity after 8 seconds? 3. A kangaroo is capable of jumping a height of 2.62 m. Determine the takeoff speed of the kangaroo. 4. A stone is dropped into a deep well and is heard to hit the water 3.4 s after being dropped. Determine the depth of the well. 5. Abra Kadabra is riding the giant drop at great mountain fall. If Abra Kadabra freely falls for 5.32 s. How far will he fall? 6. In the above problem, what will be his velocity just before hitting the ground? 7. The observation deck of tall skyscraper is 370 m above the street. Determine the time required for a penny to freely fall from the deck to the street below. 8. In problem number 7, what will be the velocity of the penny when it was in midair? 9. An object dropped on Planet X falls 64 m in 4s. Find the acceleration due to…
1. A rocket has an initial displacement of 1867 meters from the launchpad. It is moving with a velocity of 26 meters per second^2. What is it's displacement and velocity at t=200 seconds? 2. If this rocket has a jerk of 1 meter per second^3, then what is it's displacement at t=200 seconds? 3. If the rocket were traveling at an elevation angle (i.e., 0 degrees is horizontal and 90 degrees is vertical) of 30 degrees, then what is its horizontal displacement and its vertical displacement in meters?
36
1. What constant acceleration is required to increase the speed of a car from 20 mi/h to 45 mi/h in 5 s? 2. A car braked with a constant deceleration of 40 ft/sec2, producing skid marks measuring 65 ft before coming to a stop. How fast was the car traveling when the brakes were first applied? Round to the nearest hundredth. Please answer both questions and round both answers to the nearest hundredth.

Recommended textbooks for you

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

College Physics

Physics

ISBN:

9781305952300

Author:

Raymond A. Serway, Chris Vuille

Publisher:

Cengage Learning

University Physics (14th Edition)

Physics

ISBN:

9780133969290

Author:

Hugh D. Young, Roger A. Freedman

Publisher:

PEARSON

Introduction To Quantum Mechanics

Physics

ISBN:

9781107189638

Author:

Griffiths, David J., Schroeter, Darrell F.

Publisher:

Cambridge University Press

Physics for Scientists and Engineers

Physics

ISBN:

9781337553278

Author:

Raymond A. Serway, John W. Jewett

Publisher:

Cengage Learning

Lecture- Tutorials for Introductory Astronomy

Physics

ISBN:

9780321820464

Author:

Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden

Publisher:

Addison-Wesley

College Physics: A Strategic Approach (4th Editio…

Physics

ISBN:

9780134609034

Author:

Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher:

PEARSON

SEE MORE TEXTBOOKS

12. A car accelerates uniformly at 3,5 m's from a speed of 10 m's for 5 s along a straight horizontal road. 12.1 Define uniform acceleration. 12.2 Calculate the velocity of the car at 5 s. 12.3 Calculate how far the car travelled in 5 s. (3) (4) (4)