They do not react with or chemically bond to each other.
Answer: Direction
Explanation: A vector is a geometrical representation of physical quantity. It has a particular direction with a specific magnitude. In the geometry of space whether it is two dimensional or three dimensional the vector quantity has a specific direction. Such as a stone is thrown with a velocity in a particular direction.
The path of the stone in three-dimension shows its direction and speed is its magnitude.
Hence, the velocity of stone has two property magnitude mentioned as speed and particular direction. On writing the mathematical expressions for vectors, it is denoted by arrow mark on its top as shown below.
Answer:
1.16 .
Explanation:
In the product of two or more physical quantities , the number of places after decimal in the result can never be more than least number of place after decimal in the quantities that are being multiplied .
Here numbers that are being multiplied are ,
1.12 , 1.25, and .83 , each containing two digits after decimal . So the product can not contain more than two digits after decimal . The principle behind it is that the result can not have more precision than the precision of amount that are being multiplied.
so
1.12 x 1.25 x .83 = 1.162 to be rounded off to 1.16 .
The answer is 1.16.
Answer:
0.103 m/s to the south
Explanation:
The total momentum of the launcher+ball system must be conserved before and after the launch, so we can write:
where
is the total initial momentum (before the launch)
is the mass of the launcher
is the velocity of the launcher after the launch
is the mass of the ball
is the velocity of the ball after the launch (we take the north direction as positive)
Solving for , we find
and the negative sign means that the direction is south.
Answer:
F. 0J
Explanation:
At the objects highest point in the trajectory the KE = 0 since this trajectory is completely vertical with no x-component but its PE would be greatest at this point.
KE = (1/2)mv²
KE = 0; because velocity equals 0
PE = m*g*h
PE = 1kg*(9.81m/s^2)*10m
PE = 98.1J