El momento lineal de un coche que viaja hacia el norte a 20m/s es distinto al momento lineal del mismo auto viajando hacia el es
1 answer:
Explanation:
The momentum of any object is given by the product of mass and velocity with which it is moving i.e.
p = mv
Momentum is a vector quantity. It means we can resolve it into rectangular components.
If the car is moving with a speed of 20 m/s in North direction, its momentum is given by :
.....(1)
If the car is moving with a speed of 20 m/s in East direction, its momentum is given by :
....(2)
It is clear from equation (1) and (2) that the magnitude of momentum is same but the direction of momentum is different in both cases.
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Answer:
1.41 m/s^2
Explanation:
First of all, let's convert the two speeds from km/h to m/s:
Now we find the centripetal acceleration which is given by
where
v = 12.8 m/s is the speed
r = 140 m is the radius of the curve
Substituting values, we find
we also have a tangential acceleration, which is given by
where
t = 17.0 s
Substituting values,
The two components of the acceleration are perpendicular to each other, so we can find the resultant acceleration by using Pythagorean theorem: