physics
initial velocity = 42.4 m/s final velocity = 25.0 m/s time = 4.00s a = (final velocity - initial velocity)/time (25.0m/s - 42.4m/s)/ 4.00 s 'sign' of answer determines direction of acceleration
Science
I agree. forces to the right = 20n + 40n = 60n force to the left = 30n net force = 60n - 30n or 30n
Science
I agree. forces to the right = 20n + 40n = 60n force to the left = 30n
Science
just remember that weight is a force that acts down. In this case you would add both of the weights. 120n + 40n = 160 n
math
Let x = number in ones place Let x + 2 = number in tens place Let x - 4 = number in hundreds place add all and set equal to 16 x + x+2 + x-4 = 16 x + x + x = 16 -2 + 4 3x = 18 divide both sides by 3 3x/3 = 18/3 x = 6 Answer = three digit number is 286
Algebra 1
(1) rearrange terms, putting 'x' values on the left side. 4x + 3x = -5 + 9 7x = 4 divide both sides by '7' 7x/7 = 4/7 x = 4/7
math
(1)distance: Change miles to kilometers divide 15.7 mi/0.6214mi/km (2)time: Change minutes to hours 49.0 min /60 min/hr rate = distance/time
Science
Net force = force acting up - force acting down = 30N - 50N Net force = -20N Net force is in the direction of the largest force.
Science
final velocity = initial velocity + (acceleration due to gravity x time) final velocity= 0 m/s +(-9.8 m/s^2)(2 s) final velocity = -19.6 m/s or 20 m/s answer (D)
math
Let Claire = x Julia = 4x Damon = 4x(4x) Damon = (4x)(4x) = 16x^2 16(4)^2 =(16)(16) Exponential = 5.018 x 10^3 stamps Standard = 5018 stamps
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