The speed of a car is increased from 10m/s to 30 m/s. What change will happen to its kinetic energy? a. Increases by 3 times
b. Remains the same
c. Increases by 9 times
d. Increases by 2 times

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.