After tasting the salt in the ocean water on a visit to the beach one day, you recall from class that the salt is the __________
2 answers:
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Answer:
Vertical component of velocity is 9.29 m/s
Explanation:
Given that,
Velocity of projection of a projectile, v = 22 m/s
It is fired at an angle of 22°
The horizontal component of velocity is v cosθ
The vertical component of velocity is v sinθ
So, vertical component is given by :
Hence, the vertical component of the velocity is 9.29 m/s
For free fall motion the displacement can be found by graphically as well as by kinematics equation
Here acceleration of object is constant as it fall due to gravity so we can use
here if body starts with zero initial speed then we can say
here we need to find the displacement from t = 0 to t = 6s
so we can say
so the displacement will be 176.4 m
in order to find the displacement from the graph of velocity and time we need to find the area under the graph for given time interval that will also give us same displacement for given period of time.
Answer:
Final velocity will be 7.31 m/sec
Explanation:
We have given applied force F = 150 N
Mass of the object m = 11 KG
Distance traveled by the object s = 2.5 m
Coefficient of kinetic friction
Acceleration due to gravity
So frictional force applied on the object
So net force = 150-32.34 = 117.66 N
As work done us equal to
So work done =
Now according to work energy theorem work done is equal to change in kinetic energy
So
v =7.31 m/sec
So velocity final velocity will be 7.31 m/sec