Mike is standing on a building trying to get a signal on his cell phone

the total distance traveled by the car is

30km + 49km = 79 km .

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

its a 5.5 n

glad that

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.