A heavy rock and a light rock are dropped from the same height and experience no significant air resistance as they fall. Which of the following statements about these rocks are correct? (There could be more than one correct choice.)
A) Both rocks have the same kinetic energy when they reach the ground.
B) Both rocks have the same speed when they reach the ground.
C) The heavier rock reaches the ground before the lighter rock.
D) Just as they were released, both rocks had the same amount of gravitational potential energy.
E) When they reach the ground, the heavier rock has more kinetic energy than the lighter rock.
Question 2
A cylindrical drinking glass has a diameter of 2.5 in. and is 5.5 in. tall. What is the volume of the drinking glass in cubic centimeters? (2.54 cm = 1.00 in.)
A) 170 cubic cm
B) 440 cubic cm
C) 350 cubic cm
D) 710 cubic cm
E) 530 cubic cm
Light rays coming from an object to the retina.
Visible Light Spectrum
Light energy from the Sun powers
Reflection of light rays
A 400-g piece of metal at 120°C is dropped into a cup containing 450 g of water