Snowballs are thrown with a speed of 13 m/s from a roof 7.0 m above the ground. snowball a is thrown straight downward; snowball b is thrown in a direction 25o above the horizontal. when the snowballs land, is the speed of a greater than, less than, or the same speed of b? verify your answer by calculation of the landing speed of both

Speed of both the ball will be same

Explanation:

For snow ball A

Initial velocity u = 13 m/sec

Acceleration due gravity

According to third law of motion

So

v = 17.5 m/sec, here v is final velocity

For snow ball B

Initial velocity v = 13 m/sec

Angle with horizontal = 25°

Horizontal component of velocity

Vertical component of velocity

So resultant velocity of ball B

So speed of both the ball will be same

be subject to a force andchange its motion

  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