Question

Q1- The center of mass of a baseball bat is located...

A) near the grip to maximize the swing.

B) on the knob at the end of the grip.

C) in the "meaty" part about 2/3's the way up the length of the bat.

D) all along the central axis of the bat.

Q2- In walking or running, when your left foot goes forward...

A) your right arm goes forward

B) your left arm goes forward

C) it depends on how fast you want to go.

Q3- If you shoot a cannon ball horizontally off a building at 25 mph, if we neglect air resistance, the horizontal portion of ball's velocity will be...

A) Faster than 25 mph

B) slower than 25 mph

C) 25 mph

Answer 1

am 1 Correct option is o in the meaty part 1 about 2's the way up the lingth of the bat Reason - The conrre of mass is the plan on an object where there is equal weight on either side On The centre of mass of an object is not necesarially the point at which mans is equal on bom side. correct option is (A) your right arm goen. forward Reason. If you stand at the stuising line with your left foot (say) at the line, and your right fout back which arm should be forward ? The Right carm. You may have noticed that when you're running your right arm moues forward when your left leg moves forward. Why should the start Om 3 correct option is (B) Slower than 25 mph Reason: This is because when you shoot a cannon ball horizontally off a building, she acceleration due to gravity pull it down ward thus henzontal motion become slower Buildim Montjon il mohan » bewmy tuten) Gan o we when what you think what is w do are in harmony e