Momentum investing revolves around the idea of following a stock's recent trend in either direction. In the 'long' context, investors will be essentially be "buying high, but hoping to sell even higher." With this methodology, taking advantage of trends in a stock's price is key; once a stock establishes a course, it is more than likely to continue moving that way. The goal is that once a stock heads down a fixed path, it will lead to timely and profitable trades.Even though momentum is a popular stock characteristic, it can be tough to define. Debate surrounding which are the best and worst metrics to focus on is lengthy, but the Zacks Momentum Style Score, part of the Zacks Style Scores, helps address this issue for us.Below, we take a look at Motorola (MSI), a company that currently holds a Momentum Style Score of B. We also talk about price change and earnings estimate revisions, two of the main aspects of the Momentum Style Score.It's also important to note that Style Scores work as a complement to the Zacks Rank, our stock rating system that has an impressive track record of outperformance. Motorola currently has a Zacks Rank of #2 (Buy). Our research shows that stocks rated Zacks Rank #1 (Strong Buy) and #2 (Buy) and Style Scores of A or B outperform the market over the following one-month period.You can see the current list of Zacks #1 Rank Stocks here >>>Set to Beat the Market?Let's discuss some of the components of the Momentum Style Score for MSI that show why this communications equipment maker shows promise as a solid momentum pick.Looking at a stock's short-term price activity is a great way to gauge if it has momentum, since this can reflect both the current interest in a stock and if buyers or sellers have the upper hand at the moment. It is also useful to compare a security to its industry, as this can help investors pinpoint the top companies in a particular area.For MSI, shares are up 4.87% over the past week while the Zacks Wireless Equipment industry is up 1.74% over the same time period. Shares are looking quite well from a longer time frame too, as the monthly price change of 16.26% compares favorably with the industry's 11.88% performance as well.While any stock can see a spike in price, it takes a real winner to consistently outperform the market. Shares of Motorola have increased 18.45% over the past quarter, and have gained 8.76% in the last year. In comparison, the S&P 500 has only moved 0.8% and -5.23%, respectively.Investors should also take note of MSI's average 20-day trading volume. Volume is a useful item in many ways, and the 20-day average establishes a good price-to-volume baseline; a rising stock with above average volume is generally a bullish sign, whereas a declining stock on above average volume is typically bearish. Right now, MSI is averaging 702,288 shares for the last 20 days.Earnings OutlookThe Zacks Momentum Style Score also takes into account trends in estimate revisions, in addition to price changes. Please note that estimate revision trends remain at the core of Zacks Rank as well. A nice path here can help show promise, and we have recently been seeing that with MSI.Over the past two months, 2 earnings estimates moved higher compared to none lower for the full year. These revisions helped boost MSI's consensus estimate, increasing from $9.85 to $9.90 in the past 60 days. Looking at the next fiscal year, 2 estimates have moved upwards while there have been no downward revisions in the same time period.Bottom LineTaking into account all of these elements, it should come as no surprise that MSI is a #2 (Buy) stock with a Momentum Score of B. If you've been searching for a fresh pick that's set to rise in the near-term, make sure to keep Motorola on your short list. Want to Know the #1 Semiconductor Stock for 2022? Few people know how promising the semiconductor market is. Over the last couple of years, disruptions to the supply chain have caused shortages in several industries. The absence of one single semiconductor can stop all operations in certain industries. This year, companies that create and produce this essential material will have incredible pricing power. For a limited time, Zacks is revealing the top semiconductor stock for 2022. You'll find it in our new Special Report, One Semiconductor Stock Stands to Gain the Most. Today, it's yours free with no obligation.>>Give me access to my free special report.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Motorola Solutions, Inc. (MSI): Free Stock Analysis Report To read this article on Zacks.com click here.