   Chapter 4, Problem 17P

Chapter
Section
Textbook Problem

A force of 30.0 N is applied in the positive x-direction to a block of mass 8.00 kg, at rest on a frictionless surface. (a) What is the block’s acceleration? (b) How fast is it going after 6.00 s?

(a)

To determine
The acceleration of the block.

Explanation

Given info: The mass of the block is 8.00 kg. The force applied on the block is 30 N.

From Newton’s second law, the formula for acceleration is,

a=Fm

• m is the mass of the block.
• F is the force applied on the block.

Conclusion:

Substitute 8.00 kg for m and 30 N for F in the above expression to get N

(b)

To determine
The speed of the block after 6 seconds.

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