Answer:
<h3>If two forces act on an object in the same direction, the net force is equal to the sum of the two forces</h3>
First of all, I doubt it ... you threw the rock out of your hand
at least 69.5 miles per hour ? ? Maybe more, depending on
the angle.
And that's all I have to say about this one, since you haven't
asked any question.
Answer:
The distance between successive crests decreases.
Explanation:
If f is the frequency and is the wavelength of a wave, then the speed of the wave is given by :
on rearranging,
We know that wavelength of a wave is equal to the distance between successive crests or troughs.
If the frequency of a wave increases while its speed remains constant, the wavelength decreases i.e. the distance between successive crests decreases.
Answer:19.32 m/s
Explanation:
Given
initial speed of car(u)=4.92 m/s
acceleration(a)=
Speed of car after 4.5 s
using equation of motion
v=u+at
v=19.32 m/s
Displacement of the car after 4.5 s
s=54.54 m