A car advertisement states that a certain car can accelerate from rest to 15 m/s in 7 seconds. Find the car's average acceleration. *

Average acceleration = 2.14 m/s²

Explanation:

Average acceleration is the rate at which velocity changes. Average acceleration is the change in velocity divided by an elapsed time. For instance, if the velocity of a marble increases from 0 to 60 cm/s in 3 seconds, its average acceleration would be 20 cm/s/s.

0 - 15 m/s in 7 seconds

= (0 - 15) ÷ 7 s

= 15m/s ÷ 7 s

= 2.142 round off to nearest hundredths 2.14 m/s²

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19