Question

a ball is thrown vertically downward with a speed of 3.0m/s.find its speed when it has travelled a distance of 5m.

Answer 1

you have to state the gravitational acceleration.

Answer 2

i think the gravitational acceleration is 9.81m/s^2. a question is given like that without state the gravitational acceleration.

Answer 3

So you'll use the third Equation of motion:

v² = u² + 2as

so v² = 3² + 2*9.81*5 =107.1

v = sqrt(v²) = 10.349 m/s

Answer 4

tq very much..i'm appreciate it..

Answer 5

I'm glade it helped :)