Answer:
a=positive
b=0
c=positive
d=negative
Explanation:
a=acceleration depends on the speed and time. if the speed and time are increasing at the same rate, the acceleration value will be positive as the vehicle is speeding up.
b=the speed and time are not increasing, therefore the vehicle is either stationary or travelling at a steady pace.
c=same explanation as a
d=the speed and time are not increasing at the same rate as the speed is decreasing. this means that the car is slowing down
Answer:
Balanced force:
1. When force exerts on a body, they are of equal size.
2. They are if equal magnitude but opposite direction.
3. When force applied on object it remain stationary.
4. Net force is equal to zero.
Unbalanced force:
1. When force exerts on body, there size are not equal.
2. There magnitude are not equal.
3. It start moving when force applied.
4. Net force is not equal to zero.
Centripetal acceleration can be calculated through the equation:
Ac=V^2/r
V is given as 25 m/s, and r can be calculated through using C=pi•d, but we need the circumference first.
25 meters/s to make one quarter turn = 100 meters total circumference
C=pi•d
100=pi•d
d=31.83 meters
Notice that the equation for Ac asks for radius, which can be calculated by dividing the diameter by two (31.83/2 = 15.92).
Ac=V^2/r
Ac=(25^2)/15.92
Ac=39.26 Newtons
The centripetal acceleration of this object would be approximately 39.26 Newtons (re-run this calculation set with a calculator because rounding was heavily utilized).
Answer:
0.471Nm downwards.
Explanation:
For this problem we need to apply the Torque equation,
That is
Where N is the number of turns, A is the area, B is magnetic field and \theta is the angle loop mae with B
We calculate the area, so
Replacing in the equation of Torque,
We can conclude that the magnutide of maximum torque is 0.471Nm downwards.
Answer:
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Explanation:
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