Physics
posted by Jane .
a) Newton's law of motion states that the acceleration acting on a falling body
(assuming no other forces) is
x" = g, where x(t) is the height of the object
above the ground, t is time, and g is the gravitational constant. Find a general
expression to describe the height of the object above the ground with respect
to time, t; i.e. find x(t).
(b) Suppose the object is dropped from a height of 100 units (so x'(0) = 0 and
x(0) = 100), how long will it take to hit the ground?
Respond to this Question
Similar Questions

SCIENCE
For my science project i have to choose a sport and list five carefully thoughtout ways that Newton's three Laws of Motion are involed in the game i selected. The sport i have selected is tennis. i have 3 ways already but i am missing … 
Physics
a) Newton's law of motion states that the acceleration acting on a falling body (assuming no other forces) is x" = g, where x(t) is the height of the object above the ground, t is time, and g is the gravitational constant. Find … 
physics
An object is thrown downward with an initial speed of 5 m/s from a height of 78 m above the ground. At the same instant, a second object is propelled vertically from ground level with a speed of 50 m/s. The acceleration of gravity … 
Terminal Velocity
How can u determine that a falling object has reached terminal velocity from a velocity time graph of its motion? 
physics
An object is dropped from a height H above the ground. This freefalling object requires 0.904 s to travel the last 34 m before hitting the ground. From what height H above the ground did the object fall? 
physics
An object is dropped from a height H above the ground. This freefalling object requires 0.904 s to travel the last 34 m before hitting the ground. From what height H above the ground did the object fall? 
Physics
Two colliding objects exert equal and opposite forces on each other (Newton's Third Law). However, acceleration experienced by an object is inversely related to its mass: the smaller the mass, the larger the acceleration for a given … 
physics
An object is thrown downward with an initial speed of 15 m/s from a height of 85 m above the ground. At the same instant, a second object is propelled vertically up from ground level with a speed of 29 m/s. At what height above the … 
Algebra
Suppose that a constant force is applied to an object. Newton's Second Law of Motion states that the acceleration of the object varies inversely with its mass. A constant force acting upon an object with mass 12 kg produces an acceleration … 
Physics
Sorry if it is alot of questions 1. A crate falls from an airplane flying horizontally at an altitude of 2000 m. Neglecting air resistance, about how long will the crate take to strike the ground?