Question

Jennifer throws a baseball straight up into the air with a velocity of 16 m/s from the balcony of her apartment 20 m above ground.Please explain with steps

a) What is the maximum height of the baseball?

b) For how long will the baseball be in the air before hitting the ground below?

c) With what velocity will the baseball hit the ground?

Answer 1

Explanation:

Ok so consider what forces are acting on the baseball? Only one force is being applied and that is gravity and it will be applied from the moment the baseball is thrown all the way to when it will hit the ground.

So you know the initial velocity and you know the acceleration. At the top of the flight, what will be the velocity of the baseball? If you know this, you can use your kinematics equations to determine the height from where you threw the baseball. (Don't forget to add the 20 m since you are throwing from a balcony)

Finally you can use the same kinematics equation where the velocity at the top of flight is your initial velocity while using the same acceleration and height you determined to determine the final velocity (velocity that the baseball hits the ground).