Question Detail

PHY 101 Kinematics in One Dimension Objective Question
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Question

If an object is thrown vertically upwards, the acceleration due to gravity (g) is typically assigned a negative value (-g) in equations of motion because
Options
A the object is slowing down as it rises.
B the acceleration is in the opposite direction to the initial (upward) velocity.
Correct Answer
C the value of g is less than 1.
D the object has a negative mass.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The sign of acceleration is a matter of convention based on a chosen coordinate system. If the upward direction is defined as positive, and the object is thrown upward (positive initial velocity), then the downward-acting acceleration due to gravity is in the negative direction, hence assigned a negative value.

Hint

Consider the sign convention. If up is positive, what is the direction of the acceleration due to gravity?

Question Info

Course: PHY 101
Topic: Kinematics in One Dimension
Type: Objective
Difficulty: Not specified
Question 603 of 1250
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