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2 answers:
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Answer:
The speed of player is given by
Explanation:
The time of flight for a projectile motion is given by
(i)
where t is the time of flight, v is the initial speed, and α is the angle.
Now the person must also reach the impact point of ball in the same time as above.
Now the total distance D the player needs to cover is basically R horizontal range of projectile minus the distance d, range R is given by,
Now the distance the player must cover is given by
D= R-d
D= - d
(ii)
Now the average speed of player is given by
(iii)
Replacing the values of D and T from eq. (i) and (ii) in eq. (iii).
Answer:
<h2>The force isExplanation:
According to newtons law on gravitation formula, which we are going to apply,
Where G represents universal gravitation constant,
Given data
m1= 90 kg
m2= 60 kg
d= 1 m
Substituting our given data into the formula we have