A plane moves at a certain velocity then accelerates at the rate of 52 m/s2 for a distance of 2300 m to reach a velocity of 620 m/s. How fast was the plane going before it began to accelerate?

What is work? how much work is done to move an object 0 meters?

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth