We'll need to apply Newton's first law to identify the situation with a net external force.
Newton's first law: An object remains in its state of uniform motion unless acted on by an external force.
An object at rest remains at rest or if in motion, remains in motion at a constant speed in a straight line unless acted on by a net external force.
Which of the following examples describes a situation where a car is experiencing a net force?
a. The car is holding constant speed down a straight hill because the driver is applying the brakes.
b. The car is moving at constant speed in a straight line.
c. The car is holding constant speed around a curve.
d. The car is stopped on a hill.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Newton's First & Second Laws concept. You can view video lessons to learn Newton's First & Second Laws. Or if you need more Newton's First & Second Laws practice, you can also practice Newton's First & Second Laws practice problems.
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Based on our data, we think this problem is relevant for Professor Moskowitz's class at GWU.