Answer:
P = 2i + 5j
Therefore she is 2 blocks east and 5 blocks north.
Resultant P = √(2^2 + 5^2) = √(4+25) = √29 = 5.4 blocks
Angle = taninverse (5/2)
Angle = 68.2°
Explanation:
Given:
Let west be negative and east be positive x axis.
Let north be the positive y axis.
5.00blocks west = -5.00 i
5.00 blocks north = 5.00 j
7.00 blocks east = 7.00i
Addition of the vector form of hee position is;
P = -5i +7i -5j
P = 2i + 5j
Therefore she is 2 blocks east and 5 blocks north.
Resultant P = √(2^2 + 5^2) = √(4+25) = √29 = 5.4 blocks
Angle = taninverse (5/2)
Angle = 68.2°
F= m x a (According to Newton's second law of motion)
m= F/a=10/2=5kg
Answers:
a. Vx=17.6m/s
Vy=13.2m/s
b. 8.90m
c. 1.80s
Vi=22m/s
Theta=36.9deg
Vx=Vi*cos(theta)
Vy=Vi*sin(theta)
h(Max)=Vi^2*sin(theta)^2/2g
t(max height)= Vy/g
Vx=22*cos(36.9)=17.6m/s
Vy=22*sin(36.9)=13.2m/s
h(Max)=22^2*sin(36.9)^2/2(9.8)=8.90m
t(Max height)=17.6/9.8=1.80s
Second class lever has mechanical advantage always more than one as load is in between fulcrum and effort making the effort arm longer than the load arm. It multiplies force. ... It does not multiply force but changes the direction of force.
I expect that they will <em>add</em>, and their effect at every location will be the <em>sum</em> of their individual effects at that location.
For example:
If they're acting at the same point and in opposite directions, the effect will be the same as a single force at that point, with strength equal to their difference, and in the direction corresponding to whichever one is stronger.
