the average kinetic energy of the particles in an object is directly proportional to its TEMPERATURE.
Answer:
220W
Explanation:
power(w) = work done (J) ÷ time(s)
x= 5500J ÷ 25s = 220W
Answer:
4 seconds both, due to constant acceleration.
Explanation:
Acceleration is speed change over time as magnitude, then for a) a=(31-21)m/s / t, then we can calculate t as (31-21)m/s / a = (31-21)m/s / 2,5 m/s^2 = 4 seconds. b) a=(61-31)m/s / t, again t=(61-51)m/s / a=(61-51)m/s / 2,5 m/s^2 = 4 seconds.