Answer:
The white car will cover the most distance every second.
Explanation:
The formula for the uniform speed of an object is given as follows:
where,
s = distance covered by the object
v = speed of the object
t = time required
Now, if we assume time to be constant at 1 s. Then the distance covered by each car will be directly proportional to the speed of the car. Hence, the car with the greatest speed will travel the greatest distance in 1 second.
We, have:
Speed of white car > Speed of red car > Speed of green car
<u>Therefore, the white car will cover the most distance every second.</u>
Answer:
1/ 485.6 Nm
2/ Clock-wise
3/ 0 and no direction
4/ 1.62 m
Explanation:
1/ Torque is gravity force times the moment arm. Let's g = 9.81m/s2
2/ If person 2 is sitting on the right, the direction of this torque is clock-wise, since the gravity is acting downward.
3/ Assuming that location A is right at the pivot point, then the torque generated by this torque is 0, since the moment arm is 0. This has no direction.
4/ The seasaw is balanced, this means torques generated by 2 people are equal and in opposite direction
So the new location for d2 is 1.62m
Explanation:
The momentum is defined as the product between the mass and velocity:
p = m·v
Let's calculate his total momentum:
ptot = 70kg · 10m/s = 700 kg·m/s
Now we know that he's traveling 30 degrees south-east.
The momentum along the y axis will be:
py = p·cos30° = 606 kg·m/s
Along the x-axis:
px = psin30° = 350 kg·m/s
This is all related to the centripetal force. Rememeber that In uniform circular motion, velocity changes due to change in direction, eventhough magnitude remains constant. having that in mind we know that <span>She should change the direction of the vectors that are toward the center of the circle so that each points away from the center of the circle.</span>
