A 5.00 kg ball falls from a 2.00 m-high shelf. Just before hitting the floor, what will be its kinetic energy? (g = 9.80 m/s2 and assume air resistance is negligible)

a. 98.0 J
c. 19.6 J
b. 49.0 J
d. 10.0 J


A

Physics & Space Science

You might also like to view...

Typically, the new Moon's shadow _______ a solar eclipse

a. passes north of Earth so as NOT to produce b. passes south of Earth so as NOT to produce c. passes either north or south of Earth so as NOT to produce d. touches the Sun so as to produce e. touches Earth so as to produce

Physics & Space Science

A time-varying horizontal force F(t) = At4 + Bt2 acts for 0.500 s on a 12.25-kg object, starting at time t = 1.00 s. In the SI system, A has the numerical value 4.50 and B has the numerical value 8.75

(a) What are the SI units of A and B? (b) What impulse does this force impart to the object? What will be an ideal response?

Physics & Space Science

How does increasing the temperature affect a semiconductor?

a. The band gaps increase in energy. b. The resistance decreases linearly with increasing temperature. c. More and more electrons are near the Fermi energy. d. The electrons separate from their paired state when the resistance increases. e. At the critical temperature, the semiconductor becomes an impurity semiconductor.

Physics & Space Science

Which of the following objects may have organic particles on its surface as a result of the interaction of sunlight with methane in its upper atmosphere?

a. Io b. Titan c. Mimas d. Ganymede e. Callisto

Physics & Space Science