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Get Full Access to University Physics - 13 Edition - Chapter 7 - Problem 50p
Get Full Access to University Physics - 13 Edition - Chapter 7 - Problem 50p

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# CP A 2.8-kg block slides over the smooth, icy hill shown

ISBN: 9780321675460 31

## Solution for problem 50P Chapter 7

University Physics | 13th Edition

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Problem 50P

CP A 2.8-kg block slides over the smooth, icy hill shown in Fig. P7.46. The top of the hill is horizontal and 70 m higher than its base. What minimum speed must the block have at the base of the 70-m hill to pass over the pit at the far (right-hand) side of that hill?

Step-by-Step Solution:

Solution 50P Step 1: Data given Mass m = 2.8 kg Height h = 70.0 m We know by work energy relation PE = KE We have PE = mgh and KE = 1/2 mv 2 Relating these two values we get mgh = 1/2 mv 2 Rearranging to find v 2gh = v 2 Substituting values we get v = 2 × 9.8 m/s × 70.0 m v = 1372 m /s2 2 v = 37.0 m/s Hence we get initial velocity to attain height 70 m as 37.0 m/s

Step 2 of 1

##### ISBN: 9780321675460

This textbook survival guide was created for the textbook: University Physics, edition: 13. University Physics was written by and is associated to the ISBN: 9780321675460. Since the solution to 50P from 7 chapter was answered, more than 3103 students have viewed the full step-by-step answer. This full solution covers the following key subjects: Hill, Block, base, minimum, hand. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. The answer to “CP A 2.8-kg block slides over the smooth, icy hill shown in Fig. P7.46. The top of the hill is horizontal and 70 m higher than its base. What minimum speed must the block have at the base of the 70-m hill to pass over the pit at the far (right-hand) side of that hill?” is broken down into a number of easy to follow steps, and 55 words. The full step-by-step solution to problem: 50P from chapter: 7 was answered by , our top Physics solution expert on 05/06/17, 06:07PM.

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