Answer:
Step-by-step explanation:
The range of a projectile is given by :
Put R = 20 m, u = 15 m/s and finding the value of angle of projection
So,
So, the required angle of projection is equal to 
.
Answer:
im bored
so how are you
Step-by-step explanation:
Answer:
divide the top and bottom by the greatest number that will divide both numbers exactly (they must stay whole numbers).
Step-by-step explanation:
Answer:
$455
Step-by-step explanation:
The computation of the principal is shown below:
As we know that
Amount = Simple interest + Principal
Let us assume the principal be X
So,
Amount = $500
Simple interest = Principal × rate of interest × time period
= X × 5% × 2 years
= X × 0.1
So, the principal is
$500 = X × 0.1 + X
$500 = 1.1 × X
So, the X is $455 i.e principal
