Kristina works out seven days a week. Lately, she has been tired, and her body aches. If she is overtraining, which training pri
1 answer:
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Answer:
6.32 m/s 18.43° northeast
Explanation:
We express the velocity of hawk as:
We consider positive x towards east and positive y due north. So the magnitude is simply the square root of the square components:
≈
And the angle with respect to the east should be with:
Answer:
v=8m/s
Explanation:
To solve this problem we have to take into account, that the work done by the friction force, after the collision must equal the kinetic energy of both two cars just after the collision. Hence we have
where
mu: coefficient of kinetic friction
g: gravitational acceleration
We can calculate the speed of the cars after the collision by using
Now , we can compute the speed of the second car by taking into account the conservation of the momentum
the car did not exceed the speed limit
Hope this helps!!