math precalculus

Question

Antonio runs at a constant speed and travels 10 meters in 4 seconds.

If Antonio runs for 8 seconds at this constant speed, how far will he travel?

If Antonio runs for 1 second at this constant speed, how far will he travel?

What is the constant speed that Antonio runs at?

If Antonio runs for 3.3 seconds at this constant speed, how far will he travel?

Answer 1

speed = 10/4 = 2.5 meters per second

distance = speed times time d=st

In eight seconds d=2.5 x 8 = 20 meters

In one second, he travels 2.5 meters

His constant speed is 2.5 meters per second

In 3.3 seconds, he travels 3.3 times 2.5 = 3(2.5)+(.3)(2.5)= 7.5+.75= 8.25 meters