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Sagot :
Based on the mass of the object, and its acceleration, the time taken to reach a speed of 2.0 m/s is 4 seconds.
How many seconds will the object take to reach the required speed?
The time can be found as:
= Required speed / Acceletation
Accelaration is:
= Force / Mass
= (0.99iN + 0jN) / 2kg
= 0.5 ms⁻²
Time taken is:
= 2 / 0.5
= 4 seconds
Find out more on acceleration at https://brainly.com/question/460763.
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Since the force that axts on the object is the resultant force, the time taken is 0.8 s.
What is resolution of forces?
Since force is a vector, it can be resolved into its components. From the complete question, the componenets of the force are;
Vertical component;
- 5N sin 37
- 3N sin 90
- 17 N
- -20N
- Total = 3 + 3 + 17 - 20 = 3 N
Horizontal component;
- 5N cos 37
- 3N cos 90
- Total = 3.99 + 0 = 4
Resultant force = √(3)^2 + (4)^2 = 5N
Now;
F = ma
a = F/m
a = 5N/2. 0 kg
a = 2.5 m/s^2
Given that;
v = u + at
since u = 0 (object started from rest)
2 = 2.5 * t
t = 2/2.5 = 0.8 s
Learn more about forces: https://brainly.com/question/13191643
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