14. What is the net force exerted on a 90.0 kg race car driver while the race car is accelerating from 0 to 44.7 m/s in 4.50 s? Solve for Acceleration first a-(vf-vl)/t
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Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.