Answer:
The moment (torque) is given by the following equation:
Explanation:
The cross-product between the distance and the force can be calculated using the method of determinant. Since the z-components are zero, it is easy to calculate.
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Answer:
B. The truck and mosquito exert the same size force on each other.
Explanation:
Newton's third law (law of action-reaction) states that
"When an object A exerts a force (action) on an object B, then object B exerts an equal and opposite force (reaction) on object A"
In this case, we can call
object A = the truck
object B = the mosquito
Thereforce according to Newton's third law, the force exerted by the truck on the mosquito is equal in magnitude to the force exerted by the mosquito on the truck (and in opposite direction).
The reason for which the mosquito will experience much more damage is the fact that the mosquito's mass is much smaller than the truck's mass, and since the acceleration is inversely proportional to the mass:
the mosquito will experience a much larger deceleration than the truck, therefore much more damage.
Answer:
t=7.14s
v=-69.972 m/s
Explanation:
Position function
Velocity is the derivative of position function
The time the object hit the ground can be find by the given function know that the position is going to be 0m
Check:
So the velocity can be find using the time discovery before and using the same function but with the derivate
The velocity is negative because the object is moving downward