The important thing in this type of questions is to keep track of what you are doing at every point.
From t=0 to t=1s, there is uniform motion at v=24 m/s.
Therefore, it will move 24m in that second of time.
Afterwards, an acceleration comes in, so from t=1s to 11s there will be uniformly accelerated motion with acceleration -6m/s^2.
To account for this, you need to use Suvat's equation:
x(t)=x0+v0*t+1/2*a*t^2.
You should know what to plug in for each of the symbols in this equation:
x0 [initial position at t=1s] = 24m
v0 [initial velocity at t=1s] = 24 m/s
a [acceleration, switched on at t=1s] = -6 m/s^2
t [time from the start of the acceleration until the end, i.e. from t=1s to t=11s] = 10s
Plugging in those numbers in the equation will give you the position at t=11s.
200N
Explanation:
600N-400N = 200N
Answer:
200000J
Explanation:
Here the 1000N÷m is given. It is the torque. Now torque is a type of force created when an object turns.so it is a force.
100kg crate is the mass of the object.
2m is the height.
So the equation to measure gravitational pot. Enrg. Is = mass x force x height
So 1000x100x2 gives us 200000J.
Thank you
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Joel X grader
Explanation:
Formula for calculating the area of a rectangle A = Length *width
For statement A;
Given area of a rectangle with measured length = 2.536 mm and width = 1.4 mm.
Area of the rectangle = 2.536mm * 1.4mm
Area of the rectangle = 3.5504mm²
The rule of significant figures states that we should always convert the answer to the least number of significant figure amount the given value in question. Since 1.4mm has 2 significant figure, hence we will convert our answer to 2 significant figure.
Area of the rectangle = 3.6mm² (to 2sf)
For statement B;
Given area of a rectangle with measured length = 2.536 mm and width = 1.41 mm.
Area of the rectangle = 2.536mm * 1.41mm
Area of the rectangle = 3.57576mm²
Similarly, Since 1.41mm has 3 significant figure compare to 2.536 that has 4sf, hence we will convert our answer to 3 significant figure.
Area of the rectangle = 3.58mm² (to 3sf)
Based on the conversion, it can be seen that 3.6mm² is greater than 3.58mm², hence the area of rectangle in statement A is greater than the area of the rectangle in statement B.
C and D are units of length or distance.
A is a measured angle.
B is a unit of angular measurement.
