Wednesday, December 23, 2009

Physics: how to find acceloration due to gravity, given mass, height and time taken for an object to fall?

Can someone help me with the following physics question?





';On mars, a 20kg hammer is dropped from a height of 2.0m. It takes 1.04 seconds to reach the ground. What is the acceleration due to gravity on Mars?';





Thankyou!Physics: how to find acceloration due to gravity, given mass, height and time taken for an object to fall?
d = vi * t + 1/2 * a * t^2





d = distance


vi = initial velocity


a = acceleration


t = time of fall





Just plug in the known variables and solve this equation for a.Physics: how to find acceloration due to gravity, given mass, height and time taken for an object to fall?
The acceleration is your problem is 3.698 m/s/s.


2*d/t^2=a


2*2/1.04^2=3.698





As on Earth, the mass of the object is inconsequential.

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