Learning Goal: To understand the meaning and the basic applications of Newton's 1st and 2nd laws. In this problem, you are given a diagram (Figure 1) representing the motion of an object: a motion diagram. The dots represent the object's position at moments separated by equal intervals of time. The dots are connected by arrows representing the object's average velocity during the corresponding time interval. Your goal is to use this motion diagram to determine the direction of the net force acting on the object. You will then determine which force diagrams and which situations may correspond to such a motion. Consider the following situations: A car is moving along a straight road at a constant speed. A car is moving along a straight road while slowing down. A car is moving along a straight road while speeding up. A hockey puck slides along a smooth (i.e., frictionless) icy surface. A hockey puck slides along a rough concrete surface. A cockroach is speeding up from rest. A rock is thrown horizontally; air resistance is negligible. A rock is thrown horizontally; air resistance is substantial. A rock is dropped vertically; air resistance is negligible. A rock is dropped vertically; air resistance is substantial. A.) Which of these situations describe the motion shown in the motion diagram at point A? Type the letters corresponding to all the right answers. Do not use commas. For instance, if you think that only situations c and d are correct, type cd.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter2: Vectors

Section: Chapter Questions

Problem 68P: Find the cross product for (a) and (b) and (c) and and (d) and

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Learning Goal:

To understand the meaning and the basic applications of Newton's 1st and 2nd laws.

In this problem, you are given a diagram (Figure 1) representing the motion of an object: a motion diagram. The dots represent the object's position at moments separated by equal intervals of time. The dots are connected by arrows representing the object's average velocity during the corresponding time interval.

Your goal is to use this motion diagram to determine the direction of the net force acting on the object. You will then determine which force diagrams and which situations may correspond to such a motion.

Consider the following situations:

A car is moving along a straight road at a constant speed.
A car is moving along a straight road while slowing down.
A car is moving along a straight road while speeding up.
A hockey puck slides along a smooth (i.e., frictionless) icy surface.
A hockey puck slides along a rough concrete surface.
A cockroach is speeding up from rest.
A rock is thrown horizontally; air resistance is negligible.
A rock is thrown horizontally; air resistance is substantial.
A rock is dropped vertically; air resistance is negligible.
A rock is dropped vertically; air resistance is substantial.

A.) Which of these situations describe the motion shown in the motion diagram at point A?

Type the letters corresponding to all the right answers. Do not use commas. For instance, if you think that only situations c and d are correct, type cd.

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