1. A racecar accelerates uniformly from 20.0 m/s to 50.0 m/s in 30 seconds

Determine the acceleration of the car and the distance traveled.

Answer: v² = u² + 2as

2as = v² - u²

a = (v² - u²) / 2s

a = (20.0² m²/s² - 6.00² m²/s²) / (2 * 50.0 m)

a = (400 m²/s² - 36 m²/s²) / (100 m)

a = (364 m²/s²) / (100 m)

a = 3.64 m/s²

Answer:1m/s^-2

Explanation:V=u+at where;

V (final velocity) = 50m/s

U (Initial velocity) = 20m/s

a (acceleration) = ?

t (time) = 30seconds

Therefore; 50=20+a (30)

Collect like terms

50-20=30a

30=30a

Divide both side by 30

a=1ms^-2