loki

A photographer uses a light meter to measure the intensity of light from a flashbulb. The intensity for the flashbulb, I, in lux, is a function of the distance from the light, d, in metres, and can be represented by I(d)=10/d^2,d>0 a) Determine the follow...

and the rumor is the teachers are just helicopter moms who get their info from wikkipedia. so i wouldnt trust them very much

Here is what I have done ai) l(d)=10/d^2 l(3)=10/3^2 l(3)=1.11 aii) AROC = y2-y1/x2-x1 =10-1.1111/1-3 =8.8889/-2 =-4.44445 =-4.44 I just need help on aiii) and b

@study is also correct if you have that quick check

the other responses didn't make sense to me, so here's an answer that made more sense to me: p (momentum) = mv F = Δ p/Δ t p right before the ball hits the force sensor is p=(0.2kg x 4m/s) = 0.8m/s p at Fmax would be 0, because there is 0 velocity t right...

sorry, when i said "p right before the ball hits the force sensor is p=(0.2kg x 4m/s) = 0.8m/s" it should actually be 0.8kg m/s