Answer:
Horizontal Component = 129.9 km/h
Vertical Component = 75 km/h
Explanation:
When a vector is resolved on the x-axis and the y-axis, the components so formed are called its rectangular components. The component along y-axis is called the vertical component and the component along x-axis is called horizontal component. These components can be given by following formulae:
Horizontal Component = v Cos θ
Vertical Component = v Sin θ
where,
v = velocity = 150 km/h
θ = angle = 30°
Therefore,
Horizontal Component = (150 km/h)(Cos 30°)
<u>Horizontal Component = 129.9 km/h</u>
Vertical Component = (150 km/h)(Sin 30°)
<u>Vertical Component = 75 km/h</u>
Answer:
Explanation:
According to the work-energy theorem, the work done on the car is equal to its variation of kinetic energy:
where
m = 1900 kg is the mass of the car
vf = 15 m/s is the final speed
vi = 25 m/s is the initial speed
Substituting the data, we find
and the work is negative because it is done against the motion of the car (in fact, the car slows down, so it loses kinetic energy).
Earthquakes and tsunamis. hope this helps. happy unbirthday!