Ball is thrown at 42m/s and travels 18m. How long does it take for the ball to reach its destination?
+118654 Ball is thrown at 42m/s and travels 18m. How long does it take for the ball to reach its destination?
Well assuming there is no curve and the speed is totally constant. (which of course it will not be) then
Speed= distance /time
time*speed=distance
time=distance / speed
You can work all this out with the units too.
\(time=distance \div speed \\ =18m \div \frac{42m}{s}\\ = \frac{ 18m}{1} \times \frac{s}{42m} \\ \qquad \text{The metres cancel}\\ = \frac{ 18s}{42} \\ \approx 0.429 \;seconds\)
