The height of a projectile that has been launched upward can be determined by finding the sum of the product of one-half of the object’s acceleration and t2, the product of the object’s initial velocity and t, and the object’s initial height, where t represents the number of seconds after the object has been launched. An object’s acceleration can be assumed to be -32 ft/s2, which is the acceleration due to gravity.

a. Why do you think the acceleration due to gravity is represented by a negative number?

Question

The height of a projectile that has been launched upward can be determined by finding the sum of the product of one-half of the object’s acceleration and t2, the product of the object’s initial velocity and t, and the object’s initial height, where t represents the number of seconds after the object has been launched. An object’s acceleration can be assumed to be -32 ft/s2, which is the acceleration due to gravity.

a.	Why do you think the acceleration due to gravity is represented by a negative number?

anonymous · Answer

soo what do u know so far

anonymous · Answer

I don't know, I can't understand a word of what that is saying

danjs · Answer

if you let upwards be positive  and down be negative, the acceleration of gravity is down, it opposes upward motion

danjs · Answer

it is arbitrary, you call up negative and the acceleration would be +

anonymous · Answer

b.	Write a formula to represent the height of a projectile for any given time t.