A baseball is thrown and lands 120 m away. While the ball is in flight, assuming the effect of air friction is negligible, which of the following is true?
a. At maximum height the ball has its greatest kinetic energy.
b. The horizontal component of the baseball's kinetic energy is constant.
c. The vertical component of the baseball's kinetic energy is constant.
d. The mechanical energy of the baseball is greater when nearer to the ground.
e. No answer above is correct.
e
You might also like to view...
Eventually, all low mass stars will become white, then black, dwarfs
Indicate whether the statement is true or false
Process of Science: Why do we test theories about the Big Bang using particle accelerators instead of just using bigger and bigger telescopes to look further back in time?
What will be an ideal response?
You stand with your heels against a wall and bend ninety degrees forward at the waist.
A. You fall forward because your center of gravity moves ahead of your base of support. B. You fall forward because of the momentum you gain when you move. C. You fall forward because the muscles in your feet aren't strong enough to stop you. D. You are able to maintain your balance.
The speed of a 4.0-kg object is given by v = (2t) m/s, where t is in s. At what rate is the resultant force on this object doing work at t = 1 s?
a. 48 W b. 40 W c. 32 W d. 56 W e. 16 W