2. the graph shows how a cyclist's speed
changed over a 0.25-h trip. what is the
cyclist's average speed?
a. 2 km/h c. 20 km/h
b. 30 km/h d. 8 km/h

If a balloon is taken outside on a very cold day, what will occur?

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.