The magnitude of the forces acting on the block are not equal. The forces are also in the opposite direction.
Thus, the block could move to the left, or right, or it will be instantaneously at rest.
1. A block of mass 2 kg is acted upon by two forces: 3 N (directed to the left) and 4 N (directed to the right). What can you say about the block's motion?
a. It must be moving to the left.
b. It must be moving to the right.
c. It must be at rest.
d. It could be moving to the left, moving to the right, or be instantaneously at rest.
which one is the answer? there can be more than one answer......
2. A massive block is being pulled along a horizontal frictionless surface by a constant horizontal force. The block must be __________.
a. continuously changing direction
b. moving at constant velocity
c. moving with a constant nonzero acceleration
d. moving with continuously increasing acceleration
which one is the answer? there can be more than one answer.........
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 Intro to Forces + Newton's Laws concept. You can view video lessons to learn Intro to Forces + Newton's Laws. Or if you need more Intro to Forces + Newton's Laws practice, you can also practice Intro to Forces + Newton's Laws practice problems.
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Based on our data, we think this problem is relevant for Professor Spyrou's class at MSU.