Answer:
<em>The bicyclist goes at 5 m/s</em>
Explanation:
<u>Motion With Constant Acceleration </u>
It's a type of motion in which the velocity of an object changes uniformly in time.
The equation that rules the change of velocities is:
Where:
a = acceleration
vo = initial speed
vf = final speed
t = time
It's given a bicyclist is traveling at v0=+25 m/s and decelerates at . We are required to calculate the speed after t=5 seconds.
Applying the formula:
The bicyclist goes at 5 m/s
The mass of a body is the amount of substance present inside it.
As per Einstein's theory of relativity mass changes relatively when the velocity of the body is comparable to the velocity of light.
As per this theory
where c is the velocity of light and v is the velocity of the particle.
m is the mass of the object in motion and is the rest mass.
Here m increases with the increase in velocity of the body.
In our day to day life we generally view non relativistic situation.
Here the velocity of the object is very less as compared to the velocity of the light.In this situation the mass does not change .
As per the question the canon ball is taken to the moon.
So there will be no change in its mass as it is either at rest on moon or moving with some velocity that is very less as compared to the velocity of light.
The mass of the canon ball is given as m=14.5145 ounces.
we know that one ounce=28.35 grams
Hence 14.5145 ounces =14.5145×28.35 grams
=411.486075 grams [ANS]