As a demonstration of the gravitational force on falling objects for D's class, he drops a 15 lb. watermelon from the top of the science building. Determine velocity of the watermelon after falling for 2.0 seconds assuming it has reach free fall and given the gravitational acceleration of 9.8 m2/s.
Responses
A 4.9 m/s
B 19 m/s
C 38 m/s
D 76 m/s
The velocity of an object falling freely can be calculated using the formula:
velocity = acceleration * time
Given:
acceleration due to gravity (g) = 9.8 m/s^2
time (t) = 2.0 seconds
Plugging in the values:
velocity = 9.8 m/s^2 * 2.0 s
velocity = 19.6 m/s
Therefore, the velocity of the watermelon after falling for 2.0 seconds is 19.6 m/s.
Therefore, the correct answer is:
B) 19 m/s