Minimum braking distance

Question

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Answer 1

Question

Chapter 6, Problem 97P

(a)

To determine

Minimum braking distance

(b)

To determine

Minimum breaking distance if the coefficient of static friction is 0.30 for a snow layer of depth 2.5 mm.

(c)

To determine

Minimum breaking distance if the coefficient of static friction is 0.15 for a snow layer of depth 3.20 cm.

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Race car driver is cruising down the street at a constant speed of 28.9 m/s (~65 mph; he has a “lead” foot) when the traffic light in front of him turns red. a) If the driver’s reaction time is 160 ms, how far does he and his car travel down the road from the instant he sees the light change to the instant he begins to slow down? b) If the driver’s combined reaction and movement time is 750 ms, how far do he and his car travel down the road from the instant he sees the light change to the instant he slams on her brakes and car begins to slow down? Please answer parts a-B. Show all work. For each question draw a diagram to show the vector/s. Show all the step and provide units in the answers. Provide answer to 2 decimal places. DONT FORGET TO DRAW VECTORS! ONLY USE BASIC FORMULAS TAUGHT IN PHYSICS. distance = speed * time.

Race car driver is cruising down the street at a constant speed of 28.9 m/s (~65 mph; he has a “lead” foot) when the traffic light in front of him turns red. a) If the driver’s reaction time is 160 ms, how far does he and his car travel down the road from the instant he sees the light change to the instant he begins to slow down? b) If the driver’s combined reaction and movement time is 750 ms, how far do he and his car travel down the road from the instant he sees the light change to the instant he slams on her brakes and car begins to slow down? c) If the driver’s average rate of acceleration is -9.5 m/s2 as he slows down, how long does it take him to come to a stop (use information about his speed of 28.9 m/s but do NOT use his reaction and movement time in this computation)? Please answer parts a-c. Show all work. For each question draw a diagram to show the vector/s. Show all the step and provide units in the answers. Provide answer to 2 decimal places unless stated otherwise.…

How is it that part a is connected to part b? I can't seem to solve either part and don't see the connection between the two.

Answer 2

Question

Chapter 6, Problem 97P

(a)

To determine

Minimum braking distance

(b)

To determine

Minimum breaking distance if the coefficient of static friction is 0.30 for a snow layer of depth 2.5 mm.

(c)

To determine

Minimum breaking distance if the coefficient of static friction is 0.15 for a snow layer of depth 3.20 cm.

Expert Solution & Answer

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Answer 3

Question

Chapter 6, Problem 97P

(a)

To determine

Minimum braking distance

(b)

To determine

Minimum breaking distance if the coefficient of static friction is 0.30 for a snow layer of depth 2.5 mm.

(c)

To determine

Minimum breaking distance if the coefficient of static friction is 0.15 for a snow layer of depth 3.20 cm.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 6, Problem 97P

(a)

To determine

Minimum braking distance

(b)

To determine

Minimum breaking distance if the coefficient of static friction is 0.30 for a snow layer of depth 2.5 mm.

(c)

To determine

Minimum breaking distance if the coefficient of static friction is 0.15 for a snow layer of depth 3.20 cm.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 6, Problem 97P

(a)

To determine

Minimum braking distance

(b)

To determine

Minimum breaking distance if the coefficient of static friction is 0.30 for a snow layer of depth 2.5 mm.

(c)

To determine

Minimum breaking distance if the coefficient of static friction is 0.15 for a snow layer of depth 3.20 cm.

Answer 6

Chapter 6, Problem 97P

(a)

To determine

Minimum braking distance

Answer 7

Chapter 6, Problem 97P

(a)

To determine

Minimum braking distance

Answer 8

(b)

To determine

Minimum breaking distance if the coefficient of static friction is 0.30 for a snow layer of depth 2.5 mm.

Answer 9

(b)

To determine

Minimum breaking distance if the coefficient of static friction is 0.30 for a snow layer of depth 2.5 mm.

Answer 10

(c)

To determine

Minimum breaking distance if the coefficient of static friction is 0.15 for a snow layer of depth 3.20 cm.

Answer 11

(c)

To determine

Minimum breaking distance if the coefficient of static friction is 0.15 for a snow layer of depth 3.20 cm.

Answer 12

Expert Solution & Answer

Answer 13

Expert Solution & Answer

Answer 14

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Answer 15

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Minimum braking distance

Minimum braking distance

Minimum breaking distance if the coefficient of static friction is 0.30 for a snow layer of depth 2.5 mm.

Minimum breaking distance if the coefficient of static friction is 0.15 for a snow layer of depth 3.20 cm.

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Chapter 6 Solutions