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P 2.37 A train is traveling down a straight track at 20 m/ s when the engineer applies the brakes, resulting in an acceleration of - 1 .0 m/s2 as long as the train is in motion. How far does the train move during a 40-s time interval starting at the instant the brakes are applied? -P 2.45 A ball is thrown vertically upward with a speed of 25.0 m/s. (a) How high does it rise? (b) How long d it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity when it returns to the level from which it started? P 2.47 A certain freely falling object, released from rest, requires 1.50s to travel the last 30.0 m before it hits ground. (a) Find the velocity of the object when it is 30.0 m above the ground. (b) Find the total dista the object travels during the fall.

P 2.37 A train is traveling down a straight track at 20 m/ s when the engineer applies the brakes, resulting in an acceleration of - 1 .0 m/s2 as long as the train is in motion. How far does the train move during a 40-s time interval starting at the instant the brakes are applied? -P 2.45 A ball is thrown vertically upward with a speed of 25.0 m/s. (a) How high does it rise? (b) How long d it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity when it returns to the level from which it started? P 2.47 A certain freely falling object, released from rest, requires 1.50s to travel the last 30.0 m before it hits ground. (a) Find the velocity of the object when it is 30.0 m above the ground. (b) Find the total dista the object travels during the fall.

College Physics
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)...
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When I did p 2.37 I got zero but that is not the correct answer. I need help.

P 2.37 A train is traveling down a straight track at 20 m/ s when the engineer applies the brakes, resulting in an acceleration of - 1 .0 m/s2 as long as the train is in motion. How far does the train move during a 40-s time interval starting at the instant the brakes are applied? -P 2.45 A ball is thrown vertically upward with a speed of 25.0 m/s. (a) How high does it rise? (b) How long d it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity when it returns to the level from which it started? P 2.47 A certain freely falling object, released from rest, requires 1.50s to travel the last 30.0 m before it hits ground. (a) Find the velocity of the object when it is 30.0 m above the ground. (b) Find the total dista the object travels during the fall.
Transcribed Image Text:P 2.37 A train is traveling down a straight track at 20 m/ s when the engineer applies the brakes, resulting in an acceleration of - 1 .0 m/s2 as long as the train is in motion. How far does the train move during a 40-s time interval starting at the instant the brakes are applied? -P 2.45 A ball is thrown vertically upward with a speed of 25.0 m/s. (a) How high does it rise? (b) How long d it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity when it returns to the level from which it started? P 2.47 A certain freely falling object, released from rest, requires 1.50s to travel the last 30.0 m before it hits ground. (a) Find the velocity of the object when it is 30.0 m above the ground. (b) Find the total dista the object travels during the fall.
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