Aprojectile is fired horizontally off the top of a cliff with an initial velocity of 43 m/s. it hits the ground 3.0 seconds later.
b) how high is the cliff?

44.1 m

Explanation:

The vertical motion of the projectile is a free fall motion, so it is a uniform accelerated motion. This means that we can use the suvat equation:

where , taking downward as positive direction:

s is the vertical displacement

u = 0 is the initial vertical velocity of the projectile (it is fired horizontally)

t is the time

is the acceleration of gravity

We know that the projectile hits the ground at

t = 3.0 s

Therefore, by substituting this value into the equation, we find the vertical displacement of the projectile at that time, that is equal to the height of the cliff:

b would be the answer

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles