An orange is dropped from a certain height above the ground. Which of the following is correct about the orange? A. It falls down with a constant speed
B. It increases its speed as it falls to the ground
C. It decreases its speed as it falls to the ground
D. It strikes the ground with a velocity of 5 m/s
Plase I really need your help!!!

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?