A projectile starts from rest and accelerates at 125m/s2 to a velocity of 300 m/s. How long
did the projectile accelerate for?
a. 0.42 seconds
b. 2.4 seconds
0.24 seconds
d. 4.2 seconds

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.