What is Newton's gravitational constant ? write down its value and si unit.
1 answer:
You might be interested in
Answer:
5 N
Explanation:
The work done by a force on an object is (assuming that the direction of the force is parallel to the displacement of the object):
where
F is the magnitude of the force
d is the displacement of the object
In this problem, we know that:
W = 35 J is the work done
d = 7 m is the displacement of the object
Therefore, we can re-arrange the equation to calculate the force applied:
Answer:
Part a)
Part b)
Part c)
Part d)
Explanation:
As we know that he start from rest and moves with uniform acceleration
so here we can say that
as we know here that he move with uniform speed from t = 7 to t = 11
So we will have
Part b)
If Donald runs for 3 s after reaching his maximum speed
So here distance moved by Donald
Part c)
Distance of Donald from start line is given as
Part d)
Distance from start line after t = 8.5 s