Answer:
represent the final velocity
represent the initial velocity
a = g = 9.8 m/s2 represent the gravity the only force acting for both
The vertical component of velocity is the same for both since the only force acting on y is the gravity. And we can assume that the horizontal component is constant without acceleration.
So then we have the initial velocities given in the x axis are (0 for John and 25 m/s for Alice). Then we can conclude that the Alice speed is greater. Since
a) the speed of Alice is larger than that of Tom
Explanation:
For this case we can use the following kinematic equation:
represent the final velocity
represent the initial velocity
a = g = 9.8 m/s2 represent the gravity the only force acting for both
The vertical component of velocity is the same for both since the only force acting on y is the gravity. And we can assume that the horizontal component of velocity is the same for both
So then we have the initial velocities given in the x axis are (0 for John and 25 m/s for Alice). Then we can conclude that the Alice speed is greater. Since
Since the component of y is the sam but the componenet for x is greater for Alice the final speed would be higher for Alice.
So then the best option for this case is:
a) the speed of Alice is larger than that of Tom