If you walk 8km at an average speed of 4km/h, how much time does it take
2 answers:
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Answer:
Explanation:
The angular diameter of a spherical object is given by the following formula:
Where:
is the actual diameter
is the distance to the spherical object
Hence:
This is the angular diameter
Answer:
Both objects have the same magnitude of momentum.
Explanation:
If an object of mass is moving at a velocity of
, the momentum of that object would be
.
The (
) object is moving at a speed of
. The magnitude of the momentum of this object would be
.
Similarly, the momentum of the (
) object moving at a speed of
would be
.
Hence, the magnitude of momentum is the same for the two objects.
At the player's maximum height, their velocity is 0. Recall that
which tells us the player's initial velocity is
The player's height at time is given by
so we find their airtime to be
Answer:
75.36 mph
Explanation:
The distance between the other car and the intersection is,
The distance between the police car and the intersection is,
(Negative sign indicates that he is moving towards the intersection)
Therefore the distance between them is given by,
The rate of change is,
Now finding when
from (1) we have
The officer's radar gun indicates 25 mph pointed at the other car then, when
from
From (2) we get
Hence the speed of the car is