Newton's first law of motion is sometimes called the law of _________.
1 answer:
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Answer:
C. Impulse = F*t=(m*a)*t= m*(a*t) = m*Dv= D(Momentum) (“D” here’s mean Delta so change in)
Explanation:
In fact, the impulse is equal to the change in momentum of an object.
Impulse is defined as the product between the force (F) and the time (t):
however, the force is defined as the product between mass (m) and acceleration (a):
But the product a (acceleration) times t (time) is equal to the change in velocity of the object:
And this is exactly the definition of change in momentum:
Answer:
<h2>i) 8.0m</h2><h2>ii) 6.32m</h2>Explanation:
i) The total distance traveled will be the sum total of individual distances traveled by the man.
If the man travels a distance if 1.5 m towards east ,then 2m towards south and 4.5 m towards east, the total distance traveled will be expressed as; 1.5m+2m+4.5m
= 8.0m
ii) In order to get the man resultant displacement, we will use the Pythagoras theorem. Since the man travels a distance if 1.5 m and 4.5m towards east, the total distance taken towards east will be 6.0m and the distance traveled towards south is 2.0m. The resultant displacement of the man is expressed as;
R =
Note that the eastward direction is the x-direction while the south direction is the y-direction.
x = 6.0m and y = 2.0m
The displacement of the man is 6.32m