Aprojectile returns to its original height 4.08 s after being launched, during which time it travels 76.2 m horizontally. if air resistance can be neglected, what was the projectile's initial speed?

27.35 m/s

Explanation:

Given

Time of Flight of Projectile T=4.08 s

Range of Projectile =76.2 m

Time Of Flight of Projectile is given by

where u=initial Velocity

Launch angle

g=acceleration due to gravity

Range is given by

divide 1 and 2

squaring and adding 3 & 4 we get

no simpler subs form complex ones. synthesise = make

  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