You are traveling at 50 mph (22 m/s) when you see that far ahead traffic has...
You are traveling at 50 mph (22 m/s) when you see that far ahead traffic has come to a stop. You press on the brake causing an acceleration (deceleration) of -3.3 m/s^2 until you come to a stop.
How much time does it take to come to a stop after you began braking? (answer to the nearest 0.1 second, giving the numerical value without units)
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You are traveling at 50 mph (22 m/s) when you see that far ahead
traffic has...
You are traveling at 50 mph (22 m/s) when you see that far ahead traffic has...
You are traveling at 50 mph (22 m/s) when you see that far ahead traffic has come to a stop. You press on the brake causing an acceleration (deceleration) of -3.6 until you come to a stop. How much time does it take to come to a stop after you began braking? (answer to the nearest 0.1 second, giving the numerical value without units)
A motorist is traveling at 54 km/h when she observes that a traffic light 240 m ahead of her turns red. The traffic light is timed to stay red for 24 s.
A motorist is traveling at 54
km/h when she observes that a traffic light 240 m ahead of her
turns red. The traffic light is timed to stay red for 24 s. If the
motorist wishes to pass the light without stopping just as it turns
green again, determine (a) the required uniform deceleration of the
car, (b) the speed of the car as it passes the light.
020 (part 1 of 3) 10.0 points You are driving at the speed of 34.8 m/s...
020 (part 1 of 3) 10.0 points You are driving at the speed of 34.8 m/s (77.862 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes and begins to slow down with the largest deceleration possible without skid- ding. Considering an average human reaction, you press your brakes 0.576 s later. You also brake and decelerate as rapidly as possible without skidding. Assume that the coefficient of static friction is 0.722 between both...
An automobile is traveling along a straight road heading to the southeast at 24 m/s when...
An automobile is traveling along a straight road heading to the southeast at 24 m/s when the driver sees a deer begin to cross the road ahead of her. She steps on the brake and brings the car to a complete stop in an elapsed time of 8.0 s. A data recording device, triggered by the sudden braking action, records the following velocities and times as the car slows. Let the positive x-axis be directed to the southeast. Plot a...
EXERCISE You are traveling along an interstate highway at 35.0 m/s (about 79 mph) when a...
EXERCISE You are traveling along an interstate highway at 35.0 m/s (about 79 mph) when a truck stops suddenly in front of you. You immediately apply your brakes and cut your speed in half after 5.0 s. Hint (a) What was your acceleration (in m/s2), assuming it was constant? (Assume you are initially traveling in the positive direction. Indicate the direction with the sign of your answer.) -3.5 m/s2 (b) How long (in s) did it take you to stop...
You are driving to the grocery store at 25 m/s . You are 110 m from...
You are driving to the grocery store at 25 m/s . You are 110 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.70 s and that your car brakes with constant acceleration. -How far are you from the intersection when you begin to apply the brakes? -What acceleration will bring you to rest right at the intersection? -How long does it take you to stop? A rock is tossed straight up with...
Driving down the road at a speed of 26.6 m/s, you suddenly notice a fallen tree...
Driving down the road at a speed of 26.6 m/s, you suddenly notice a fallen tree blocking the road a distance of 57.9 m ahead of you. You step on the brake pedal and decelerate at a constant rate. What must the magnitude of your acceleration be so that you will come to a stop 7.6 m in front of the tree?
Please show work 3. A car traveling at a constant 39 m/s (-87 mph) passes a...
Please show work
3. A car traveling at a constant 39 m/s (-87 mph) passes a police car that is initially traveling at 25 m/s (55 mph). At the instant of the pass, the police car accelerates at a constant rate of 3.3 m/s in pursuit. We wish to find how much time elapses before the officer catches the car. (a) Identify the initial states when the car passes the police. (b) Define the final state or conditions which enable...
2. (13 points) A drag race car le traveling it 95 m/s when it crosses the...
2. (13 points) A drag race car le traveling it 95 m/s when it crosses the finish line. The driver applies the brakes, which provide a constant acceleration with magnitude 15 m/s (a) (6 points) How long does it take for the car to come to a stop? 9= 15m/s² v=95m/s 95 mis - 15 /s2 6.3 m/s (b) (7 pointa) How far does the cur travel from the finish line to the point where it stops? 9= 15 mis?...
5:16 lLTE ) Done 1 of 5 Assessment #1 (Kinematics of a Particle) Rectilinear Motion (Straight...
5:16 lLTE ) Done 1 of 5 Assessment #1 (Kinematics of a Particle) Rectilinear Motion (Straight linc Motion 3. The position of a point during the interval of time from r otor 6 is given by ** * m. (a) What is the maximum velocity during this interval of time, and at what time does it occur? (b) What is the acceleration when the velocity is a maximum? (20 m/s, 0 m/s 3. A test projectile is fired horizontally into...
020 (part 1 of 3) 10.0 points You are driving at the speed of 34.8 m/s (77.862 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes and begins to slow down with the largest deceleration possible without skid- ding. Considering an average human reaction, you press your brakes 0.576 s later. You also brake and decelerate as rapidly as possible without skidding. Assume that the coefficient of static friction is 0.722 between both...
An automobile is traveling along a straight road heading to the southeast at 24 m/s when the driver sees a deer begin to cross the road ahead of her. She steps on the brake and brings the car to a complete stop in an elapsed time of 8.0 s. A data recording device, triggered by the sudden braking action, records the following velocities and times as the car slows. Let the positive x-axis be directed to the southeast. Plot a...
EXERCISE You are traveling along an interstate highway at 35.0 m/s (about 79 mph) when a truck stops suddenly in front of you. You immediately apply your brakes and cut your speed in half after 5.0 s. Hint (a) What was your acceleration (in m/s2), assuming it was constant? (Assume you are initially traveling in the positive direction. Indicate the direction with the sign of your answer.) -3.5 m/s2 (b) How long (in s) did it take you to stop...
Please show work
3. A car traveling at a constant 39 m/s (-87 mph) passes a police car that is initially traveling at 25 m/s (55 mph). At the instant of the pass, the police car accelerates at a constant rate of 3.3 m/s in pursuit. We wish to find how much time elapses before the officer catches the car. (a) Identify the initial states when the car passes the police. (b) Define the final state or conditions which enable...
2. (13 points) A drag race car le traveling it 95 m/s when it crosses the finish line. The driver applies the brakes, which provide a constant acceleration with magnitude 15 m/s (a) (6 points) How long does it take for the car to come to a stop? 9= 15m/s² v=95m/s 95 mis - 15 /s2 6.3 m/s (b) (7 pointa) How far does the cur travel from the finish line to the point where it stops? 9= 15 mis?...
5:16 lLTE ) Done 1 of 5 Assessment #1 (Kinematics of a Particle) Rectilinear Motion (Straight linc Motion 3. The position of a point during the interval of time from r otor 6 is given by ** * m. (a) What is the maximum velocity during this interval of time, and at what time does it occur? (b) What is the acceleration when the velocity is a maximum? (20 m/s, 0 m/s 3. A test projectile is fired horizontally into...
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