Pusheen, with mass m = 1:20 [kg], is sitting
still at a 2:00 [m] high tree branch. She was suddenly
pushed by Nyan imparting an initial velocity of
1:50 [m=s] downwards. What is its kinetic energy just
before she lands on the ground?
choices:
A. 22.2 J
B. 22.6 J
C. 24.4 J
D. 24.9 J
To calculate the kinetic energy of Pusheen just before she lands on the ground, we need to use the formula for kinetic energy:
Kinetic Energy = (1/2) * mass * velocity^2
Given that Pusheen's mass is 1.20 kg and her initial velocity is 1.50 m/s downwards, we can substitute these values into the formula and calculate the kinetic energy.
Kinetic Energy = (1/2) * 1.20 kg * (1.50 m/s)^2
Kinetic Energy = 0.5 * 1.20 kg * 2.25 m^2/s^2
Kinetic Energy = 1.35 J
Therefore, the kinetic energy of Pusheen just before she lands on the ground is 1.35 J.
None of the provided choices (A, B, C, or D) match the calculated value of 1.35 J.