The volume of the water in the graduated cylinder rose as some of the water was displaced by the table tennis ball. find the volume of ths ball using the formula
vb=vf-vi
where vb is the volume of the ball, vf is the final volume of the water, and vi is the initial volume of the water. record the volume of the ball in table a of your student guide.
what is the volume of the tennis ball
³

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle