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Answer:
Force, F = 44 N
Explanation:
Given that,
Initial speed of the football, u = 0
Final speed, v = 15 m/s
The time of contact of the ball, t = 0.15 s
The mass of football, m = 0.44 kg
We need to find the average force exerted on the ball. It is given by the formula as :
So, the average force exerted on the ball is 44 N. Hence, this is the required solution.
Answer:
1.9311 m/s
168.86792 N
Explanation:
v = Final velocity
m = Mass of truck =
s = Displacement = 26.5 m
Work done is given by
The speed is 1.9311 m/s
Work done is given by
The horizontal force is 168.86792 N
Answer:
See below
Explanation:
OK....here is help only
Horizontal components
b : 5 cos 20
a: 5 cos ( 180+75) = 5 cos ( 255)
Vertical components
b: 5 sin 20
a: 5 sin ( 255)
Can you take it from here?
Now you can add the horizontal and vertical components
then the magnitude of the resultant = sqrt (vert^2 + horiz^2)
Angle can be found by arctan (vert/horiz) (it will be in Q IV )