Question

The equation d=4.9t2 represents the distance (d) an object falls in time. In the equation, d is in meters, and t is in seconds. If an object falls a total distance of 1.2 meters, approximately how long did it fall?

Answer 1

The equation d=4.9t^2 represents the distance an object falls in time where d is in meters and t is in seconds.

If an object falls a total distance of 1 meter, we can solve for t by setting d to 1 and solving for t.

Therefore, 1 = 4.9t^2 which simplifies to t = sqrt(1/4.9) ≈ 0.45 seconds.