c and d would be very unwieldy. However, you do know (I hope) that 60 mph = 88 ft/s
That's probably a good conversion to use.
select an appropriate unit from the choices below and connect the rate to that unit.
answer a - ft /s
answer b - mph
answer c - mm/s
answer d - km/s
question : A person walking at 3,4 mph
1 answer