“I am sure I will get a good grade on this project. I’ve worked really hard; my teacher will recognize my efforts!” This stateme
2 answers:
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Answer:
2s
Explanation:
The position function of the motion can be expressed as:
where is the origin where the particle starts off,
and a = <1,2,0> m/s2. In the 3-coordinate system it can be written as
For the particle to hit the 2x+y-z=4 plane then its coordinates must meet that criteria
t = 2 or t = -1
Since t can only be positive we will pick t = 2s
Answer:
The relative velocity of the motorcycle to a passenger in the car is 30 km/h
Explanation:
The question relates to the principle of relative velocity and reference frames
The given parameters are;
The velocity of the motorcycle, v₁ = 120 km/h
The velocity of the car, v₂ = 90 km/h
The relative velocity of an object X with regards to another object Y is the velocity the object X will seem to be moving with to an observer in the rest frame of object Y written as =
-
Therefore, the relative velocity of the motorcycle to the car is = v₁ - v₂, which give;
= 120 km/h - 90 km/h = 30 km/h
The relative velocity of the motorcycle to a passenger in the car = 30 km/h.