Speed of a Free Falling Object After 10 Seconds

Answered using GPT-4o mini by AI Answer Generator

Question:

Ten seconds after starting from rest, a freely falling object will have a speed of about Group of answer choices

100 m/s

10 m/s

50 m/s

more than 500 m/s

Answer:

To determine the speed of a freely falling object after 10 seconds, we can use the formula for the speed of an object in free fall:

[ v = g \cdot t ]

where:

  • ( v ) is the final speed,
  • ( g ) is the acceleration due to gravity (approximately ( 9.81 , \text{m/s}^2 )),
  • ( t ) is the time in seconds.

Plugging in the values:

[ v = 9.81 , \text{m/s}^2 \cdot 10 , \text{s} = 98.1 , \text{m/s} ]

Rounding this, we find that the speed is approximately ( 100 , \text{m/s} ).

Therefore, the correct answer is:

100 m/s