Atennis ball is thrown vertically upward with an initial velocity of +1.6 m/s. what will the ball's speed after 2 s?
a -23 m/s
b -10 m/s
c -18 m/s
d -9 m/s

C -18 m/s

Explanation:

This problem is related to vertical motion and the equation that is useful for this situation is:

Where:

is the final velocity of the tennis ball at 2 s

is the initial velocity of the tennis ball (directed upwards)

is the time

is the constant acceleration due to gravity

This is the final velocity of the ball at (directed downwards)

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is