Which statement is the most accurate for falling objects on Earth?
A) Neglecting the effects of air resistance, heavy objects fall faster than light objects.
B) All objects fall at roughly the same speed.
C) Neglecting the effects of air resistance, light objects fall faster than heavy objects.
D) Neglecting the effects of air resistance, all objects fall at roughly the same speed.
E) Heavy objects fall significantly faster than light objects.
D
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A projectile is shot horizontally at 23.4 m/s from the roof of a building 55 m tall and experiences negligible air resistance
(a) Determine the time necessary for the projectile to reach the ground below. (b) Determine the distance from the base of the building that the projectile lands. (c) Determine the horizontal and vertical components of the velocity just before the projectile reaches the ground.
A conclusion from special relativity is that events that are simultaneous in one inertial frame
A. are simultaneous in all inertial reference frames. B. are simultaneous in all inertial frames moving at the same speed. C. may not be simultaneous in another inertial reference frame. D. are simultaneous in inertial reference frames moving in the same direction. E. are simultaneous in inertial reference frames moving in the opposite direction.
A "parallel ray" is a ray parallel to the
A) mirror radius B) object axis C) chief ray D) optic axis
The longer a given diameter of wire, the higher its resistance
Indicate whether the statement is true or false