A pitcher throws a 0.15 kg baseball at -34.5m/s. The batter swings and applies a force for 0.1 seconds. If the final velocity of the baseball was 30 m/s, What was
the amount of force acting on the baseball?

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

What occurs during a combustion reaction

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.