Part (a) Explanation Given: Initial velocity, u = 75 k m / h v = final velocity = 0 a = acceleration = − 0.50 m/s 2 (negative because it is actually a deceleration, i.e.. the car is slowing down) Formula Used: Third equation of motion: v ² = u ² + 2 a s Where, v is the final velocity, u is the initial velocity, a is the acceleration and s is the displacement. Calculation: Convert initial velocity from km/h to m/s. Initial velocity = 75 × 1000 3600 = 20 Part (b) To determine The time it takes to stop Part (c) To determine The distance it travels during the first and fifth seconds.

7th Edition

ISBN: 9780321921741

Author: GIANCOLI

Publisher: PEARSON

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Chapter 2, Problem 30P

Part (a)

To determine

The distance that the car coasts before it stops.

Part (b)

To determine

The time it takes to stop

Part (c)

To determine

The distance it travels during the first and fifth seconds.

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Chapter 2, Problem 29P

Chapter 2, Problem 31P

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