The mechanical advantage(MA) of an inclined plane depends on
its length
its height
the product of its length and height
the ratio of its length to its height
Correct answer is D
No explanation has been provided for this answer.
friction
viscosity
surface tension
evaporation
Correct answer is C
No explanation has been provided for this answer.
400N
300N
283N
212N
Correct answer is D
momentum force = Rsin\(\theta\) - \(\mu\)Rcos\(\theta\)
Fm = (40 x 10 x sin 45) - (40 x 10 x 0.25 x cos 45)
= 212N
40%
35%
20%
15%
Correct answer is C
P.E = mgh = 1000m joules
K.E = \(\frac{1}{2}\)mv2 = 200m joules
%converted = \(\frac{200m}{1000m}\) x 100
= 20%
8JQ
10J
32J
160J
Correct answer is C
X = ut + \(\frac{1}{2}\)at2
= (0 x 4) + (\(\frac{1}{2}\) x 0.1 x 4 x 4)
= 0.8m
workdone = force x distance
= 40 x 0.8
= 32J