Suppose the activity of a sample of radioactive material was 100Bq at the start. What would you divide 100Bq by to obtain the ac
1 answer:
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Answer:
The cannon has an initial speed of 13.25 m/s.
Explanation:
The launched cannonball is an example of a projectile. Thus, its launch speed can be determined by the application of the formula;
R = u
Where: R is the range of the projectile, u is its initial speed, H is the height of the cliff and g is the gravitaty.
R = 26.3 m, H = 19.3 m, g = 9.8 m/.
So that:
26.3 = u
=
x
691.69 = x
=
=
= 175.6104
⇒ u =
= 13.2518
u = 13.25 m/s
The initial speed of the cannon is 13.25 m/s.