5. O rândunică zboară cu o viteză de 15km/h pe o distanță de 5km. Ea face o pauză de 15 min, după care își continuă drumul cu o viteză de 12 km/h, pe o distanță de 2 km. Dacă a plecat la ora 14, la ce oră a ajuns la destinație?

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass