A 10 kg box is pulled to the right by 50 N force. If the friction force is 12 N, then the acceleration of the box is: Select one: O a. 8.3 O b. 8.8 O c. 3.8 m/s² O d. 3.3
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
NNED ANSWER FOR SECOND ONE FIRST
![Question1. At time t a particle has a velocity v(t) =
t= 0 it is at a point which has a position vector r(t) = 3j .
[2cos(t)]i - [4sin(t)cos(t)]j, t>0 and at time
Find the position of the particle at time t . (3 marks)
b. Find the position of the particle when it first comes to rest . (3 marks)
c.
i.
Find the Cartesian equation of the path of the particle. (3 marks)
Sketch the path of the particle clearly showing scaled axes) giving the domain and
range. (3 marks)
ii.
d. Express |v[² in terms of cos(t) and without using calculus, find the maximum speed of the
particle. (3 marks)
e. Give the time at which the particle is at rest for the second time. (3 marks)
f.
Show that the distance d of the particle from the origin at time t is given by
d² = cos²(2t) + 2cos(2t) + 6 (3 marks)
ii.
i.
%3D
Find the time(s) at which the particle is closest to the origin. (4 marks)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe482260c-a481-4036-b56b-ba1151b84d9b%2Fbf85a5bf-8120-4018-85c0-15a22e2f483e%2Fu2iaea_processed.png&w=3840&q=75)
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