A couple walking in the park strolls 1.5 km in 60 min. What is the couple’s average speed in m/h?

1,500m/h

Explanation:

the information that we have is:

distance traveled:

to convert this quantity to meters we remember that 1km = 1,000m

so the distance in meters is:

and we also know the time

time: , and since 60min = 1hour, the time in hours is:

now we use the formula for the average speed:

and we sustitute the known values (since we want the answer to be in m/h we substitute the distance in meters (m) and the time in hours(h)):

the speed of the couple in m/h is: 1,500m/h

c the car's velocity increases constantly over time.

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.